CLASS 342, COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) |
1 | RADIO WAVE ABSORBER: |
This subclass is indented under the class definition. Subject matter wherein a material or device takes up and
dissipates far field radar or radio wave signals.
SEE OR SEARCH CLASS:
| |||||||
2 | . For aircraft or missile: |
This subclass is indented under subclass 1. Subject matter including use with air vehicles or projectiles. | |
3 | . For camouflage: |
This subclass is indented under subclass 1. Subject matter including means to disguises an object by
radar absorption.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
4 | . With particular geometric configuration: |
This subclass is indented under subclass 1. Subject matter wherein the absorber has significant topological structural details. | |
5 | RADAR REFLECTOR: |
This subclass is indented under the class definition. Subject matter wherein there are means primarily intended
to echo or return far field radar signals.
SEE OR SEARCH CLASS:
| |||||||
6 | . With modulation: |
This subclass is indented under subclass 5. Subject matter including means to vary the amplitude, frequency
of phase of a far field radar signal as it is being reflected.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
7 | . Corner: |
This subclass is indented under subclass 5. Subject matter wherein the reflecting surfaces are arranged to intersect so as to provided a retrodirective reflection. | |
8 | .. Inflatable or collapsible: |
This subclass is indented under subclass 7. Subject matter wherein the corner reflector has the capability of being: (1) distended by gas (e.g., air); or (2) deflated of gas; or (3) folded together so as to occupy a smaller volume of space. | |
9 | .. Decoy or tow target: |
This subclass is indented under subclass 7. Subject matter wherein the corner reflectors is (1) either part of a vehicle or part of a device pulled by a vehicle which provides reflected signals which disguise the true location of the vehicle or (2) used to move the primary point of reflection. | |
10 | . Inflatable or collapsible: |
This subclass is indented under subclass 5. Subject matter wherein the reflector has the capability of being: (1) distended by gas (e.g., air); or (2) deflated of gas; or (3) folded together so as to occupy a smaller volume of space. | |
11 | . With spherical lens (e.g., Luneberg lens): |
This subclass is indented under subclass 5. Subject matter wherein the reflector includes a spherically
shaped structure transparent to radio waves having a relative dielectric
constant different from unity.
SEE OR SEARCH CLASS:
| |||||
12 | . Chaff: |
This subclass is indented under subclass 5. Subject matter wherein the reflector including thin, narrow,
metallic strips of various length and frequency responses.
SEE OR SEARCH CLASS:
| |||||||||
13 | RADAR EW (ELECTRONIC WARFARE): |
This subclass is indented under the class definition. Subject matter including means for intentionally interfering with systems or devices within the class, for avoiding such interference or for use in support of such means. | |
14 | . ECM (electronic countermeasures, i.e., jamming): |
This subclass is indented under subclass 13. Subject matter including means for intentionally interfering
with the transmission or reception of signals of systems or devices
with the this class.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
15 | .. With repeater: |
This subclass is indented under subclass 14. Subject matter including means to provide a false target
replica of a received radar signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
16 | . ECCM (electronic counter-/countermeasures, i.e., anti-jamming): |
This subclass is indented under subclass 13. Subject matter including means to avoid interferences with the transmission or reception of signals by systems or devices within this class. | |
17 | .. Radar reacts to jamming: |
This subclass is indented under subclass 16. Subject matter wherein a radar system being interfered with changes its mode of operation in response to the interference. | |
18 | ... By changing frequency: |
This subclass is indented under subclass 17. Subject matter wherein the radar system changes its operating frequency in response to being jammed. | |
19 | ... By varying gain or blocking receiver: |
This subclass is indented under subclass 17. Subject matter wherein the receiver gain is reduced or the
receiver is gated off in response to being jammed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
20 | . Detection of surveillance: |
This subclass is indented under subclass 13. Subject matter including means to indicate only the presence
of systematic radio signal observation means.
| |||
21 | BASE BAND SYSTEM: |
This subclass is indented under the class definition. Subject matter wherein a radar signal extends over a broad
band of frequencies rather than being at a single carrier frequency.
SEE OR SEARCH CLASS:
| |||
22 | TRANSMISSION THROUGH MEDIA OTHER THAN AIR OR FREE SPACE: |
This subclass is indented under the class definition. Subject matter wherein a radar signal is sent through a
substance other than air or free space.
SEE OR SEARCH CLASS:
| |||||
23 | BERTHING OR DOCKING: |
This subclass is indented under the class definition. Subject matter wherein a radar system is used to assist in bringing a vehicle to a space allowed for its safety or convenience between other vehicles, piers, wharves or portals. | |
24 | BLIND AID: |
This subclass is indented under the class definition. Subject matter wherein a radar system generates the effect of a long antenna by signal processing means rather than by the actual use of a long physical antenna. | |
25R | SYNTHETIC APERTURE RADAR (EPO): |
This subclass is indented under the class definition. Subject matter wherein a radar system generates the effect
of a long antenna by signal processing means rather than by the
actual use of a long physical antenna.
| |||
25A | . Mapping or imaging using synthetic aperture radar (EPO) |
This subclass has no definition. | |
25B | .. Specially adapted for moving target detection (EPO) |
This subclass has no definition. | |
25C | .. Combined with monopulse or interferometric (EPO) |
This subclass has no definition. | |
25D | .. With frequency domain processing of the SAR signals in azimuth (EPO) |
This subclass has no definition. | |
25E | .. With time domain processing of the SAR signals in azimuth, e.g. time focusing (EPO) |
This subclass has no definition. | |
25F | .. Particular SAR processing techniques (e.g., squint mode, doppler beam-sharpening mode, spotlight mode, bistatic SAR, inverse SAR) (EPO) |
This subclass has no definition. | |
26R | RADAR FOR METEOROLOGICAL USE (EPO): |
This subclass is indented under the class definition. Subject matter wherein a radar systems is used to evaluate
meteorological conditions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
26A | . Mounted on satellite (EPO) |
This subclass has no definition. | |
26B | . Mounted on aircraft (EPO) |
This subclass has no definition. | |
26C | . Mounted on ship (EPO) |
This subclass has no definition. | |
26D | . Ground based (EPO) |
This subclass has no definition. | |
27 | PRESENCE DETECTION ONLY: |
This subclass is indented under the class definition. Subject matter wherein a radar system senses the existence
of a target without quantifying any of its characteristics.
SEE OR SEARCH CLASS:
| |||
28 | . By motion detection: |
This subclass is indented under subclass 27. Subject matter wherein the presence of a target is detected
by sensing target movement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
29 | AIRCRAFT COLLISION AVOIDANCE SYSTEM (CAS): |
This subclass is indented under the class definition. Subject matter wherein a radar signal is used to assist
in preventing aircrafts from flying into one another, or
other obstacles.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
30 | . With transponder: |
This subclass is indented under subclass 29. Subject matter including a radio signal receiver-transmitter
to convey the radar signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
31 | .. Including synchronized clock: |
This subclass is indented under subclass 30. Subject matter including means to operate plural transponders
on separate aircraft or on the ground, on a common time
base.
SEE OR SEARCH CLASS:
| |||
32 | .. Included in secondary surveillance radar (SSR or air traffic control radio beacon system (ATCRBS): |
This subclass is indented under subclass 30. Subject matter wherein the transponder means are part of
a secondary surveillance radar (SSR) or an air
traffic control radio beacon system (ATCRBS).
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
33 | AIRCRAFT LANDING SYSTEM: |
This subclass is indented under the class definition. Subject matter wherein a radar signal is used by an airborne
vehicle to enable the vehicle to land safely on the ground.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
34 | . Ground control approach (GCA): |
This subclass is indented under subclass 33. Subject matter including a ground radar system providing information by which aircraft approaches to landing may be directed via radio communications. | |
35 | . Microwave landing system (MLS): |
This subclass is indented under subclass 33. Subject matter including an airfield approach microwave radar generating a guideline for landing. | |
36 | AIR TRAFFIC CONTROL: |
This subclass is indented under the class definition. Subject matter wherein a radar signal is used to maintain
cognizance or to regulate the movement of aircraft in relation to
each other or to other objects.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
37 | . Secondary surveillance radar (SSR) or air traffic control radar beacon system (ATCRBS): |
This subclass is indented under subclass 36. Subject matter including a radar beacon-transponder
means to maintain cognizance or to regulate the paths of selected
vehicles within a selected area such as an airport terminal area
or air route.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
38 | .. With altitude information: |
This subclass is indented under subclass 37. Subject matter wherein the transponder signal includes information
about the vertical distance of an aircraft or other object above
a given reference plane such as the ground or sea.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
39 | .. With side lobe suppression: |
This subclass is indented under subclass 37. Subject matter including circuitry means to exclude or greatly
attenuate a portion of the beam for an antenna, other than
the main lobe.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
40 | .. With defruiting or degarbling: |
This subclass is indented under subclass 37. Subject matter including means to eliminate random nonsynchronous
unintentional return signals in a beacon system or to decode multiple
overlapping signal transmission interference.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
41 | SHIP COLLISION AVOIDANCE: |
This subclass is indented under the class definition. Subject matter wherein a radar signal is used to assist
in preventing naval craft from running into one another.
SEE OR SEARCH CLASS:
| |||
42 | RADAR TRANSPONDER SYSTEM: |
This subclass is indented under the class definition. Subject matter having means wherein the radar signal is
received from an originating station, has information coded
thereon or added and is retransmitted to the originating station.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
43 | . Combined with primary radar system: |
This subclass is indented under subclass 42. Subject matter wherein the transponder system is combined with a system in which the retransmitted (reply) signal is a reflection of the transmitted energy from the surface of the target. | |
44 | . Unique identity: |
This subclass is indented under subclass 42. Subject matter wherein the coded radar retransmitted (reply) signal contains information used to distinguish the transponder station from all others. | |
45 | . IFF or SIF: |
This subclass is indented under subclass 42. Subject matter including means to transmit radio signals
between two stations located on ships, aircraft, or
the ground, for automatic identification of particular
station characteristics, such as station type (e.g., ally
or enemy, bomber or fighter, etc.).
| |||||
46 | . Navigational: |
This subclass is indented under subclass 42. Subject matter wherein the transponder system is used to
direct a vehicle to an intended destination.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
47 | .. Distance measuring equipment (DME): |
This subclass is indented under subclass 46. Subject matter including means to provide distance information
by measuring total round-trip time of transmission from
an interrogator to a transponder and return, with internationally
recognized signals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
48 | ... With automatic lock-on: |
This subclass is indented under subclass 47. Subject matter wherein the interrogator station includes circuit means which is self-activating to lock-on the reply signal. | |
49 | ... With VOR/TACAN: |
This subclass is indented under subclass 47. Subject matter including means operating at VHF and providing
radial lines of positioning any direction as determined by bearing
selection within the receiving equipment, or means operating
at UHF using pulse techniques to provide a polar coordinate (rho-theta) system of
navigation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
50 | . With telemetry: |
This subclass is indented under subclass 42. Subject matter wherein the coded transponder signal contains
telemetry information.
SEE OR SEARCH CLASS:
| |||||
51 | . Radar transponder only: |
This subclass is indented under subclass 42. Subject matter including a radar transponder means, per
se.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
52 | COMBINED WITH DIVERSE TYPE RADIANT ENERGY SYSTEM: |
This subclass is indented under the class definition. Subject matter wherein a radar system operates in conjunction with a different type of far field radiant energy system. | |
53 | . With infrared device: |
This subclass is indented under subclass 52. Subject matter including a device which operates using radiant
energy within the wavelength range 780 to 105 nanometers.
SEE OR SEARCH CLASS:
| |||||||
54 | . With laser: |
This subclass is indented under subclass 52. Subject matter including a device which provides an intense, coherent, directional
beam of light by stimulating electronic, ionic or molecular
transitions to lower energy levels.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
55 | . With television: |
This subclass is indented under subclass 52. Subject matter including the electronic transmission and
reception of transient visual images.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
56 | . With direction finding: |
This subclass is indented under subclass 52. Subject matter including a device used to determine the
direction of arrival of remotely transmitted radio signals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
57 | . With radio voice communication: |
This subclass is indented under subclass 52. Subject matter including the transmission and reception
of human voice communication by radio wave.
SEE OR SEARCH CLASS:
| |||
58 | . With transmission to a remote station: |
This subclass is indented under subclass 52. Subject matter including radiant energy means to send a received radar signal to a distant location. | |
59 | PLURAL RADAR: |
This subclass is indented under the class definition. Subject matter wherein there are two or more radar systems. | |
60 | TRANSMITTING INTELLIGENCE: |
This subclass is indented under the class definition. Subject matter wherein the radar signal beam is used as
a carrier for transmitting information in addition to radar information.
SEE OR SEARCH CLASS:
| |||
61 | RETURN SIGNAL CONTROLS EXTERNAL DEVICE: |
This subclass is indented under the class definition. Subject matter wherein the reflected radar signal is used
to regulate a device separate from the radar system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
62 | . Missile or spacecraft guidance: |
This subclass is indented under subclass 61. Subject matter including control of a projectile or a space
vehicle.
SEE OR SEARCH CLASS:
| |||
63 | . Aircraft guidance: |
This subclass is indented under subclass 61. Subject matter including means to control an air-borne
vehicle"s flight path.
SEE OR SEARCH CLASS:
| |||
64 | .. With map matching: |
This subclass is indented under subclass 63. Subject matter including means to compare radar data with previously stored location information to derive guidance signals. | |
65 | .. With terrain avoidance or alarm: |
This subclass is indented under subclass 63. Subject matter including means either (1) to automatically
control the aircraft to follow ground contour or to prevent the
aircraft from hitting ground based obstacles or (2) to
develop signals to alert the aircraft operator.
SEE OR SEARCH CLASS:
| |||
66 | . Camera: |
This subclass is indented under subclass 61. Subject matter including means to control the operation
of a photographic device.
SEE OR SEARCH CLASS:
| |||
67 | . Gun (e.g., fire control): |
This subclass is indented under subclass 61. Subject matter including means to control the operation
of a firearm.
SEE OR SEARCH CLASS:
| |||||||
68 | . Proximity fuze: |
This subclass is indented under subclass 61. Subject matter including means to control the operation
of a fuze device as it approaches its target.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
69 | . Device actuated by presence of land vehicle: |
This subclass is indented under subclass 61. Subject matter including means controlled by a return signal
indicative of the presence of a land vehicle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
70 | . Radar mounted on and controls land vehicle: |
This subclass is indented under subclass 61. Subject matter including radar means attached to a land vehicle and the return signal is used to control the operation of the land vehicle. | |
71 | .. With control of brakes or steering: |
This subclass is indented under subclass 70. Subject matter including regulation of the land vehicle"s
stopping means or its direction control means.
SEE OR SEARCH CLASS:
| |||
72 | .. With control of safety device (e.g., air bags): |
This subclass is indented under subclass 70. Subject matter including regulation of the operation of
occupant protective means.
SEE OR SEARCH CLASS:
| |||
73 | RETURN SIGNAL CONTROLS RADAR SYSTEM: |
This subclass is indented under the class definition. Subject matter wherein the reflected radar signal is used
to regulate the operation of the radar system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
74 | . Antenna control: |
This subclass is indented under subclass 73. Subject matter including control by the returned signal
of the radar system antenna.
SEE OR SEARCH CLASS:
| |||
75 | .. Physical orientation: |
This subclass is indented under subclass 74. Subject matter including control of which way the antenna is pointing or its bearing. | |
76 | ... With ground tracking: |
This subclass is indented under subclass 75. Subject matter wherein the returned signal is used to align the antenna in an aircraft with the actual path of the aircraft along the ground. | |
77 | ... With signal error correction: |
This subclass is indented under subclass 75. Subject matter wherein circuitry is provided to correct
for errors in the returned signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
78 | ... Conical scan: |
This subclass is indented under subclass 75. Subject matter wherein the rotation of the beam of the radar
system describes a cone, the axis of which coincides with
that of the antenna boresight.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
79 | ... Lobe switching: |
This subclass is indented under subclass 75. Subject matter wherein the antenna"s maximum reception orientation
is periodically switched to each of two or more direction in turn.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
80 | ... Monopulse: |
This subclass is indented under subclass 75. Subject matter including the use of a technique in which
information concerning the angular location of a source or target
is derivable from each pulse or signal detection by comparison of signals
received simultaneously in two or more antenna beams.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
81 | .. Beam direction by phase or frequency control: |
This subclass is indented under subclass 74. Subject matter including control of which way the signal
emanating from the antenna is directed by varying the phase or frequency
of the signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
82 | . Transmitter: |
This subclass is indented under subclass 73. Subject matter including control by the returned signal of the means used to transmit the radar signal. | |
83 | .. Signal phase or frequency other than pulse repetition frequency (PRF): |
This subclass is indented under subclass 82. Subject matter including control of the radar signal phase
or frequency other than pulse repetition frequency.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
84 | ... Function of doppler frequency: |
This subclass is indented under subclass 83. Subject matter wherein the radar transmitter frequency shift
component of the returned signal which is due to the target velocity
as it approaches toward or recedes from the radar.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
85 | ... Function of distance: |
This subclass is indented under subclass 83. Subject matter wherein the radar transmitter frequency is varied as function of target distance. | |
86 | .... With constant phase: |
This subclass is indented under subclass 85. Subject matter wherein a constant phase relationship is maintained between the transmitted and returned signals. | |
87 | .... With constant beat frequency: |
This subclass is indented under subclass 85. Subject matter wherein a constant beat frequency is maintained between the transmitted and received signals. | |
88 | .. Transmission Timing (e.g., Ring Around): |
This subclass is indented under subclass 82. Subject matter including control of the transmitter signal
timing.
| |||
89 | . Receiver: |
This subclass is indented under subclass 73. Subject matter including control of the means used to receive the radar signal. | |
90 | .. Automatic target detection: |
This subclass is indented under subclass 89. Subject matter including self-acting means to distinguish
between the presence of a return signal from a source having predetermined characteristics
versus noise or clutter.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
91 | .. Gain or threshold: |
This subclass is indented under subclass 89. Subject matter including control of the receiver signal strength or sensitivity. | |
92 | ... Automatic gain control (AGC): |
This subclass is indented under subclass 91. Subject matter including self-acting circuit means to adjust the receiver gain. | |
93 | ... Constant false alarm rate (CFAR): |
This subclass is indented under subclass 91. Subject matter including means specially designed to regulate
false alarm caused by noise, or clutter.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
94 | .. Gating: |
This subclass is indented under subclass 89. Subject matter including control of a device having the
ability to permit or inhibit the passage of a signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
95 | ... Automatic range tracking: |
This subclass is indented under subclass 94. Subject matter including self-acting circuit means
to control the timing of a gate in relation to the range of the
target.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
96 | .... Automatic track while scan (ATWS): |
This subclass is indented under subclass 95. Subject matter including self-acting circuit means to control a gate to keep a receiver locked on a target while continuing to receive return signals from various elements in a given region. | |
97 | .... With automatic lock-on: |
This subclass is indented under subclass 95. Subject matter including self-acting circuit means to continuously track a target. | |
98 | .. Frequency: |
This subclass is indented under subclass 89. Subject matter including control of the receiver frequency.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
99 | ... Doppler frequency tracking: |
This subclass is indented under subclass 98. Subject matter wherein circuitry is provided to follow variations
in the doppler component of the returned signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
100 | .... With local oscillator control: |
This subclass is indented under subclass 98. Subject matter wherein the returned signal is used to regulate the frequency of the receiver local oscillator. | |
101 | .... With filter control: |
This subclass is indented under subclass 98. Subject matter wherein the returned signal is used to vary the center frequency or the bandwidth of a receiver filter circuit. | |
102 | ... Phase: |
This subclass is indented under subclass 98. Subject matter including control of the receiver phase. | |
103 | .... Phase locked loop: |
This subclass is indented under subclass 102. Subject matter including circuit means to compare the phases of an output signal and the return signal of a target, with any phase differences converted into a correction voltage that causes the phase of the output signal to change so that it tracks the return signal. | |
104 | DETERMINING VELOCITY: |
This subclass is indented under the class definition. Subject matter wherein a returned radar signal is used to
measure the speed of an object.
SEE OR SEARCH CLASS:
| |||||
105 | . Other than doppler (e.g., range rate): |
This subclass is indented under subclass 104. Subject matter including velocity determination other than
by measuring the doppler shift of the radar signal.
| |||
106 | . Combined with determining acceleration: |
This subclass is indented under subclass 104. Subject matter including measurement of the rate of change
in the velocity of the object.
SEE OR SEARCH CLASS:
| |||
107 | . Combined with determining distance and direction: |
This subclass is indented under subclass 104. Subject matter including the radar measurement of the distance
and direction of the object from a given point.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
108 | .. With correlation: |
This subclass is indented under subclass 107. Subject matter including a measurement of a relationship
between the transmitted and the received radar signals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
109 | . Combined with determining distance: |
This subclass is indented under subclass 104. Subject matter including the radar measurement of the distance
of an object from a given point.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
110 | .. With plural fixed range gates: |
This subclass is indented under subclass 109. Subject matter wherein the returned signal corresponding
to the respective transmitted radar pulses is applied to plural
processing channels which are sequentially activated for short predetermined
periods of time to represent range increments.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
111 | .. With plural receiver frequency band separation: |
This subclass is indented under subclass 109. Subject matter including the use of more than one frequency
separation filter.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
112 | .. With plural frequencies transmission: |
This subclass is indented under subclass 109. Subject matter including transmitting two or more discrete
frequencies and determining distance from changes in each of the
received frequencies.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
113 | . Combined with determining direction (i.e., bearing): |
This subclass is indented under subclass 104. Subject matter including the radar gauging of direction
of an object from a given point.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
114 | . Combined with determining sense of motion (i.e., approaching or receding): |
This subclass is indented under subclass 104. Subject matter including detection of whether an object
is moving toward or from a given point.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
115 | . Digital: |
This subclass is indented under subclass 104. Subject matter including digital processing of the returned
radar signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
116 | . With plural received frequency band separation: |
This subclass is indented under subclass 104. Subject matter including the use of more than one frequency
separation filter.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
117 | . With plural beams (e.g., "Janus"): |
This subclass is indented under subclass 104. Subject matter including the use of two or more radar beams
in making the velocity determination.
| |||
118 | DETERMINING DISTANCE: |
This subclass is indented under the class definition. Subject matter wherein a returned radar signal is used to
measure the range of an object from a reference point.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
119 | . Miss distance indicator (MDI): |
This subclass is indented under subclass 118. Subject matter including measuring the distance to an object at the closest point of approach to a reference point. | |
120 | . Altimeter: |
This subclass is indented under subclass 118. Subject matter including determining the distance an aircraft
to the earth"s surface from the aircraft.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
121 | .. With additional indicator: |
This subclass is indented under subclass 120. Subject matter including means to display information in addition to altitude. | |
122 | .. FM type: |
This subclass is indented under subclass 120. Subject matter wherein the radar altimeter carrier signal
is frequency modified.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
123 | . Height finder: |
This subclass is indented under subclass 118. Subject matter including determining the distance from the
earth"s surface to an aircraft from the ground.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
124 | . Material level within container: |
This subclass is indented under subclass 118. Subject matter including determining the height of a substance
in a vessel.
SEE OR SEARCH CLASS:
| |||
125 | . With remote cooperating station: |
This subclass is indented under subclass 118. Subject matter including determining the distance between the radar station and a station detached from the radar station using means on the detached station to interact cooperatively with the radar station"s radar signal. | |
126 | . Triangulation: |
This subclass is indented under subclass 118. Subject matter including distance determination be radar
derived procedures of finding the location of a third point by taking
bearings from two fixed points a known distance apart from each
other or the third point; or by determining the distance
from a third point to two known points.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
127 | . Phase comparison: |
This subclass is indented under subclass 118. Subject matter including determining distance by comparing the phase of the transmitted radar with the returned radar carried signal. | |
128 | . With frequency modulation: |
This subclass is indented under subclass 118. Subject matter including determining distance by using a
frequency modified radar carrier signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
129 | .. Plural frequency transmitted: |
This subclass is indented under subclass 128. Subject matter including the transmission of two or more discrete frequency modulated radar carrier signals. | |
130 | .. Plural modulation: |
This subclass is indented under subclass 128. Subject matter wherein the radar carrier signal is modified by more than one modifying signal. | |
131 | ... Combined with pulse modulation (e.g., frequency agile): |
This subclass is indented under subclass 130. Subject matter including the use of pulse modified radar
carrier signals in making the distance determination.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
132 | .... Within pulse modulation (e.g., "CHIRP"): |
This subclass is indented under subclass 131. Subject matter including modulation of the frequency within
the duration of the pulse modulation.
| |||
133 | .. Combined with determining direction: |
This subclass is indented under subclass 128. Subject matter including determining the direction of the
object from the radar source.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
134 | . With pulse modulation: |
This subclass is indented under subclass 118. Subject matter including the use of pulse modified radar
carrier signals in making the distance determination.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
135 | .. Digital (e.g., with counter): |
This subclass is indented under subclass 134. Subject matter including digitally processing the returned
radar signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
136 | ... With plural fixed range gates: |
This subclass is indented under subclass 135. Subject matter wherein the returned signal corresponding
to respective transmitted radar pulses is applied to plural processing
channels which are sequentially activated for short predetermined
periods of time to represent range increments.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
137 | .. With variable pulse repetition frequency (PRF) or pulse width: |
This subclass is indented under subclass 134. Subject matter including changing the rate of the pulse transmission or the width of the pulse transmissions from the radar source. | |
138 | .. With type "A" or "J" range scope: |
This subclass is indented under subclass 134. Subject matter including cathode ray tube display of the
returned radar signal as ordinates vs. time as abscissas (Type "A") or
with the time base as a circle and the returned signal appearing
as a radial deflection from it (Type "J").
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
139 | .. Combined with determining direction: |
This subclass is indented under subclass 134. Subject matter including determining the direction of the
object from the radar source.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
140 | ... With azimuth and elevation determination: |
This subclass is indented under subclass 139. Subject matter including the object"s angular measurement in a horizontal plane and in a clockwise direction and its angular position tangent to the earth"s surface. | |
141 | ... Off boresight: |
This subclass is indented under subclass 139. Subject matter including means for measuring the angle between the antenna boresight and the line of sight to the target. | |
142 | ... With CRT display: |
This subclass is indented under subclass 139. Subject matter including cathode ray tube (CRT) display
means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
143 | .... Plural: |
This subclass is indented under subclass 142. Subject matter including more than one CRT. | |
144 | .... PPI type: |
This subclass is indented under subclass 142. Subject matter wherein the display represents the signal as a bright spot, with range indicated by the distance of the spot from the center of the screen and the bearing by the radial angle of the spot. | |
145 | . With correlation: |
This subclass is indented under subclass 118. Subject matter including a measurement of relationship between
the transmitted and the received radar signals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
146 | . Combined with determining direction: |
This subclass is indented under subclass 118. Subject matter including determining the direction of the
object from the radar source.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
147 | DETERMINING DIRECTION: |
This subclass is indented under the class definition. Subject matter wherein a returned radar signal is used to
indicate the direction of an object from a reference point.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
148 | . Low angle processing: |
This subclass is indented under subclass 147. Subject matter including direction determination of an object
at a low angle elevation with respect to the radar signal source.
| |||
149 | . Monopulse: |
This subclass is indented under subclass 147. Subject matter including the use of a radar technique in
which the angular location information of a source or target object
is derivable from each pulse or signals received simultaneously
in two or more antenna beams, i.e., sum and
difference channels in the receiver compare the amplitudes or phases
of the antenna outputs.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
150 | .. With common if channel: |
This subclass is indented under subclass 149. Subject matter wherein the signals for comparison share an IF channel. | |
151 | .. With channel equalization: |
This subclass is indented under subclass 149. Subject matter including means to balance the signal processing in each of the channels. | |
152 | .. With quadrature difference processing: |
This subclass is indented under subclass 149. Subject matter wherein the "in phase" sum
signal is combined with the "quadrature" phase difference
signals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
153 | .. With particular antenna or waveguide: |
This subclass is indented under subclass 149. Subject matter including a significant antenna apparatus
or wave guide structure.
SEE OR SEARCH CLASS:
| |||||
154 | .. Combined with beam steering: |
This subclass is indented under subclass 149. Subject matter including control of which direction the
signal is emanating from the antenna by varying the phase or frequency
of the signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
155 | . Lobe switching: |
This subclass is indented under subclass 147. Subject matter including periodically and discretely shifting
a directive radiation pattern in position so as to produce a variation
of the signal at the target.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
156 | . Interferometer: |
This subclass is indented under subclass 147. Subject matter including a receiving antenna system which
determines the angle of arrival of the radar signal by phase comparison
in the signals at several points on the antenna system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
157 | . With frequency or phase steering: |
This subclass is indented under subclass 147. Subject matter including means to adjust by radar signal over the elements of a given region. | |
158 | . Scanning: |
This subclass is indented under subclass 147. Subject matter including directing the radar signal over
the elements of a given region.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
159 | CLUTTER ELIMINATION: |
This subclass is indented under the class definition. Subject matter wherein unwanted echoes are cancelled from
the returned radar signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
160 | . MTI (moving target indicator): |
This subclass is indented under subclass 159. Subject matter including means to eliminate stationary targets
from the returned radar signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
161 | .. With vehicle movement compensation (e.g., AMTI (airborne MTI): |
This subclass is indented under subclass 160. Subject matter including means to adjust for the movement of the craft in which the MTI radar is located. | |
162 | .. Digital: |
This subclass is indented under subclass 160. Subject matter including means to process the returned radar
signal as information in the form of one of a discrete number of
codes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
163 | .. With blind speed elimination: |
This subclass is indented under subclass 160. Subject matter wherein circuitry is provided to compensate for targets having radial velocities such that the returned signals cancel each other to produce a false indication of a stationary target. | |
164 | .. With storage tube: |
This subclass is indented under subclass 160. Subject matter including a CRT that stores images on a separate
screen behind the viewing screen to distinguish between target return
signals having variations indicative of motion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
165 | TESTING OR CALIBRATING OF RADAR SYSTEMS: |
This subclass is indented under the class definition. Subject matter wherein either: (1) a determination
is made how the radar apparatus is functioning, including
the existence, type and location of any trouble; or (2) a
comparison or measurement is made of the radar apparatus with a
standard in order to: (a) determine its
accuracy; (b) devise a corrected scale; (c) determine
the performance level of the equipment with regard to technical
order specification; or (d) generate
a correction or compensation signal.
SEE OR SEARCH CLASS:
| |||||
166 | . Proximity fuze: |
This subclass is indented under subclass 165. Subject matter wherein the radar apparatus under test includes
means to control the operation of a fuze device as it approaches
its target.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
167 | . With laser: |
This subclass is indented under subclass 165. Subject matter wherein the radar test apparatus includes
a device for transforming incoherent light of various frequencies
of vibration into a very narrow, intense beam of coherent
light.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
168 | . With noise generation: |
This subclass is indented under subclass 165. Subject matter including means in the test apparatus to produce random electrical disturbances or spurious signals. | |
169 | . By simulation: |
This subclass is indented under subclass 165. Subject matter wherein the test apparatus includes means
to apply signals representative of radar return signals (e.g., simulating
a radar target object) to the radar apparatus.
SEE OR SEARCH CLASS:
| |||||
170 | .. Microwave: |
This subclass is indented under subclass 169. Subject matter wherein the radar testing apparatus utilizes radio waves in the frequency range of 1 gigahertz and upward. | |
171 | .. Doppler: |
This subclass is indented under subclass 169. Subject matter wherein the radar apparatus under test utilizes
the change of frequency of its transmitted signals caused by the
time rate of change of the effective distance travelled by the signals
between the source of signal transmission and the point of observation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
172 | .. With delay: |
This subclass is indented under subclass 169. Subject matter including circuit means in the simulator to retard the passage of signals from one part of the apparatus under test to another. | |
173 | . By monitoring: |
This subclass is indented under subclass 165. Subject matter including means to observe the performance characteristics of the radar apparatus under test. | |
174 | .. Calibrating: |
This subclass is indented under subclass 173. Subject matter including means to adjust the radar apparatus utilizing a correction or compensation signal as determined by monitoring, or in order to devise an accurate scale. | |
175 | WITH PARTICULAR CIRCUIT: |
This subclass is indented under the class definition. Subject matter wherein a circuit associated with the radar system is significant. | |
176 | . Display: |
This subclass is indented under subclass 175. Subject matter including means to present for viewing, the
radar information.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
177 | .. Plural: |
This subclass is indented under subclass 176. Subject matter including more than one display. | |
178 | .. Projection type: |
This subclass is indented under subclass 176. Subject matter wherein the display of the radar information is provided by optical means causing the information to be represented on a surface or screen. | |
179 | .. Image production: |
This subclass is indented under subclass 176. Subject matter including means to provide a likeness of the radar target for display. | |
180 | .. Stereoscopies or tridimensional: |
This subclass is indented under subclass 176. Subject matter including means to produce a three-dimensional
view or to indicate distance, azimuth and elevation on
a single display surface.
SEE OR SEARCH CLASS:
| |||
181 | .. Color: |
This subclass is indented under subclass 176. Subject matter including means to produce the display in
color.
SEE OR SEARCH CLASS:
| |||
182 | .. Electronic marker generation: |
This subclass is indented under subclass 176. Subject matter including means to electronically generate
symbols representative of radar target information.
| |||
183 | ... Cursor: |
This subclass is indented under subclass 182. Subject matter including the generation of a reference marking (e.g., a
line) which moves back and forth over the display surface
to enable accurate readings.
SEE OR SEARCH CLASS:
| |||||
184 | .. With stabilization (e.g., true motion, true north): |
This subclass is indented under subclass 176. Subject matter including means to control the orientation of the display, or to compensate for movement to the display or target indicia on display. | |
185 | .. Scan conversion: |
This subclass is indented under subclass 176. Subject matter including means to transform one display
format or rate into another.
SEE OR SEARCH CLASS:
| |||
186 | .. With sweep expansion: |
This subclass is indented under subclass 176. Subject matter including means to enlarge part of all of the display sweep. | |
187 | . Augmenter: |
This subclass is indented under subclass 175. Subject matter wherein an active repeater is provided for
returning the radar signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
188 | . With polarization: |
This subclass is indented under subclass 175. Subject matter including means to polarize the radar signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
189 | . For correlation: |
This subclass is indented under subclass 175. Subject matter including circuitry for the measurement of
the relationship between the transmitted and the received signals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
190 | . With recording: |
This subclass is indented under subclass 175. Subject matter including circuit means for making and storing a copy of the returned radar signal. | |
191 | .. Mapping: |
Subject matter including means to make a s:graphic representation of radar information received in the returned signal. | |
192 | . Spectrum analysis: |
This subclass is indented under subclass 175. Subject matter including means to study the energy distribution
of the returned radar signal.
SEE OR SEARCH CLASS:
| |||
193 | .. Harmonic: |
This subclass is indented under subclass 192. Subject matter including means to identify and evaluate harmonics that make up the returned radar signal. | |
194 | . Complex signal (in phase and quadrature): |
This subclass is indented under subclass 175. Subject matter including receiver circuit means to separate
returned radar signals into "in phase" and quadrature" components.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
195 | . Digital processing: |
This subclass is indented under subclass 175. Subject matter including receiver circuit means to process
the returned radar signal by transforming the information contained
therein into data carrying signals wherein the information is in
the form of one of a discrete number of codes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
196 | .. Fast fourier transform (FFT): |
This subclass is indented under subclass 195. Subject matter including means to perform a fast fourier
transform.
SEE OR SEARCH CLASS:
| |||
197 | .. With video quantizer: |
This subclass is indented under subclass 195. Subject matter including means to digitize the radar video signal. | |
198 | . For receiver protection: |
This subclass is indented under subclass 175. Subject matter wherein circuitry such as duplexes, T-R
device, or blanking circuit is provided to prevent the
transmitter signal from entering the receiver.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
199 | . Automatic frequency control (AFC): |
This subclass is indented under subclass 175. Subject matter wherein the circuitry is provided to maintain the frequency of the radar at a constant value or in a fixed relation with respect to some other section of the radar. | |
200 | . For frequency modulation: |
This subclass is indented under subclass 175. Subject matter wherein the frequency or phase of the transmitted
radar signal is variably controlled as a function of time or other
factor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
201 | .. Combined with pulse modulation: |
This subclass is indented under subclass 200. Subject matter including control of the transmitted radar
signal to form discrete pulses.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
202 | . For pulse modulation: |
This subclass is indented under subclass 175. Subject matter including control of the transmitted radar
signal to form discrete pulses.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
203 | .. With noise reduction: |
This subclass is indented under subclass 202. Subject matter including circuitry to distinguish between target echoes and noise pulses. | |
204 | .. With pulse shaping: |
This subclass is indented under subclass 202. Subject matter including circuitry for altering the radar pulse shape, bandwidth or spectrum. | |
205 | . Sensitivity time control (STC): |
This subclass is indented under subclass 175. Subject matter including means to vary the gain (sensitivity) of the radar receiver as a function of time within each pulse repetition interval or observation time in order to prevent overloading of the receiver by strong echoes from targets or clutter at close ranges. | |
350 | DIRECTIVE: |
This subclass is indented under the class definition. Devices and processes for sending or receiving radio wave
energy which is characterized by some quality that varies according
to the relative direction or position of the sender or receiver.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||
351 | . Including a radiometer: |
This subclass is indented under subclass 350. Subject matter including means to measure the signal strength of the radio wave energy. | |
352 | . Including a satellite: |
This subclass is indented under subclass 350. Subject matter wherein the radio wave energy is transmitted
or received by an object in space, in orbit about the earth.
SEE OR SEARCH CLASS:
| |||||
353 | .. Having a signal repeater: |
This subclass is indented under subclass 352. Subject matter wherein the satellite retransmits the directive signal to a remote receiver. | |
354 | .. With beam steering: |
This subclass is indented under subclass 352. Subject matter wherein the position of satellite antenna beam is changed by electrical means. | |
355 | .. With control of satellite attitude: |
This subclass is indented under subclass 352. Subject matter wherein the attitude of the satellite is
controlled by a signal from a remote transmitter.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
356 | .. Synchronous satellite: |
This subclass is indented under subclass 352. Subject matter wherein the satellite speed in orbit is matched to the speed of rotation of the earth on its axis. | |
357.2 | .. With position, velocity, or attitude determination (IPC): |
This subclass is indented under subclass 352. Subject matter including a receiver which interacts with
the object in space for determining the location, speed
or bearing of the receiver, transmitters and receivers
for such systems, ancillary equipment contributing to the
proper function of such systems, or methods or devices
for calculating location, speed or bearing of the receiver, based
on signals received from the object in space.
| |||
357.21 | ... Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system (IPC): |
This subclass is indented under subclass 357.2. Subject matter comprising devices or methods for calculating
the location or orientation of a receiver based on signals transmitted
by a satellite-borne radio wave transmitter.
| |||
357.22 | .... The satellite radio beacon positioning system transmitting time-stamped messages; e.g., GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO (IPC): |
This subclass is indented under subclass 357.21. Subject matter wherein the transmitter sends a message encoded
with time of transmission for used in determining travel time; e.g., at
receiver.
| |||
357.23 | ..... Correcting position, velocity, or attitude (IPC): |
This subclass is indented under subclass 357.22. Subject matter comprising devices or methods for eliminating
or reducing errors in the calculation of the location of the receiver, its
velocity with respect to a relatively stationary reference or the
inclination of the axes of a body to some frame of reference.
| |||
357.24 | ...... Differential correction; e.g., DGPS [differential GPS] (IPC): |
This subclass is indented under subclass 357.23. Subject matter wherein the correction is based on error
information from a source at another location.
| |||
357.25 | ..... Determining position (IPC): |
This subclass is indented under subclass 357.22. Subject matter comprising devices or methods for determining
the location of the receiver.
| |||
357.26 | ...... Using carrier phase measurements; e.g., kinematic positioning; using long or short baseline interferometry (IPC): |
This subclass is indented under subclass 357.25. Subject matter comprising devices or methods for (1) measuring
carrier phase at a plurality of spaced antennas and using the difference, (2) for
counting the number of cycles that carry the code signal, or (3) using
the accumulated phase of the carriers of the system signal.
| |||
357.27 | ....... Carrier phase ambiguity resolution; floating ambiguity; LAMBDA [Least-squares AMBiguity Decorrelation Adjustment] method (IPC): |
This subclass is indented under subclass 357.26. Subject matter comprising devices and methods to resolve
the number of unknown integer cycles.
| |||
357.28 | ...... By combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement (IPC): |
This subclass is indented under subclass 357.25. Subject matter wherein the position is calculated by combining
distances measured from a satellite with data from some other measurement.
| |||
357.29 | ....... The supplementary measurement being of a radio-wave signal type (IPC): |
This subclass is indented under subclass 357.28. Subject matter wherein the other measurement is made using
radio waves.
| |||
357.3 | ....... The supplementary measurement being an inertial measurement, e.g. tightly coupled inertial (IPC): |
This subclass is indented under subclass 357.28. Subject matter wherein the other measurement is based on
the dynamics of a fixed or moving mass; e.g., IMU
or INS.
| |||
357.31 | ...... By combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system (IPC): |
This subclass is indented under subclass 357.25. Subject matter wherein position is determined by combining
or switching between two calculated positions of which one is derived
from a satellite radio beacon positioning system and one from another
type of system.
| |||
357.32 | ....... Whereby the further system is an inertial position system; e.g. loosely-coupled (IPC): |
This subclass is indented under subclass 357.31. Subject matter wherein the calculated position of the other
type of system is derived from the dynamics of a fixed or moving
mass; e.g., IMU or INS.
| |||
357.33 | ...... Whereby the position solution is constrained to lie upon a particular curve or surface; e.g. for locomotives on railway tracks (IPC): |
This subclass is indented under subclass 357.25. Subject matter wherein the determined position is confined
to a set of values associated with a given curve or surface.
| |||
357.34 | ...... Relative positioning (IPC): |
This subclass is indented under subclass 357.25. Subject matter comprising devices or methods for determining
a first location relative to a second location.
| |||
357.35 | ..... Determining velocity (IPC): |
This subclass is indented under subclass 357.22. Subject matter comprising devices or methods for determining
the time rate of change of position of the receiver.
| |||
357.36 | ..... Determining attitude (IPC): |
This subclass is indented under subclass 357.22. Subject matter wherein the inclination of the axes of a
body to some frame of reference is determined.
| |||
357.37 | ...... Using carrier phase measurements; using long or short baseline interferometry (IPC): |
This subclass is indented under subclass 357.36. Subject matter comprising devices or methods for (1) measuring
carrier phase at a plurality of spaced antennas and using the difference
therebetween for generating attitude information, (2) for
counting the number of cycles that carry the code signal, or (3) using the
accumulated phase of the carriers of the system signal.
| |||
357.38 | ....... Carrier phase ambiguity resolution; floating ambiguity; LAMBDA [Least-squares AMBiguity Decorrelation Adjustment] method (IPC): |
This subclass is indented under subclass 357.37. Subject matter comprising devices and methods to resolve
the number of unknown integer cycles.
| |||
357.39 | ... Satellite radio beacon positioning systems transmitting time-stamped messages; e.g., GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO (IPC): |
This subclass is indented under subclass 357.2. Subject matter wherein the transmitter sends a message encoded
with time of transmission for use in determining travel time; e.g., at
receiver.
| |||
357.395 | .... Details of the space or ground control segments (IPC): |
This subclass is indented under subclass 357.39. Subject matter comprising features of the satellite’s
communication or data processing systems or features of ground based
satellite tracking, monitoring or data uploading systems.
| |||
357.4 | .... Cooperating elements; interaction or communication between different cooperating elements or between cooperating elements and receivers (IPC): |
This subclass is indented under subclass 357.39. Subject matter comprising additional elements or subsystems, including
receivers of other users, which interact or communicate with
the receiver or the satellite positioning systems or details of
the interactions or communications between such additional elements or
subsystems.
| |||
357.41 | ..... Providing carrier phase data (IPC): |
This subclass is indented under subclass 357.4. Subject matter wherein the cooperating element supplies
information to the receiver regarding the phase of the carrier wave
transmitted by the satellite.
| |||
357.42 | ..... Providing aiding data (IPC): |
This subclass is indented under subclass 357.4. Subject matter under subclass 357.4 wherein the
cooperating element provides information to a receiver (e.g., ephemeris
data, Doppler or timing information) which either
speeds up the acquisition process in the receiver by obviating the
need to decode the navigation message transmitted by a satellite, or
allows acquisition in environments where decoding of the navigation
message is not possible.
| |||
357.43 | ...... Employing an initial estimate of the location of the receiver as aiding data or in generating aiding data (IPC): |
This subclass is indented under subclass 357.42. Subject matter wherein the cooperating element provides
approximate location data to the receiver or uses the approximate
location data to generate aiding data.
| |||
357.44 | ..... Providing data for correcting measured positioning data; e.g. DGPS [differential GPS] or ionosphere corrections (IPC): |
This subclass is indented under subclass 357.4. Subject matter wherein the cooperating element supplies
information for improving the accuracy of the receiver’s
positioning data, or for correcting the positioning data
for the effects of the ionosphere on the received satellite signal.
| |||
357.45 | ..... Providing integrity information; e.g., health of satellites or quality of ephemeris data (IPC): |
This subclass is indented under subclass 357.4. Subject matter wherein the cooperating element provides
information relating to the ability of the receiver to detect and
indicate system malfunctions (not operating within specified performance
limits).
| |||
357.46 | ..... Providing processing capability normally carried out by the receiver (IPC): |
This subclass is indented under subclass 357.4. Subject matter wherein the cooperating element performs
such data processing or calculations as are usually performed by
the receiver.
| |||
357.47 | ..... Providing dedicated supplementary positioning signals (IPC): |
This subclass is indented under subclass 357.4. Subject matter wherein the cooperating element transmits
additional positioning signals to the receiver.
| |||
357.48 | ...... Wherein the cooperating elements are pseudolites or satellite radio beacon positioning system signal repeaters (IPC): |
This subclass is indented under subclass 357.47. Subject matter wherein the cooperating element is a ground-based
transmitter which transmits or re-transmits positioning
signals to a receiver.
| |||
357.49 | ...... Wherein the cooperating elements are telecommunication base stations (IPC): |
This subclass is indented under subclass 357.47. Subject matter wherein the supplementary signal is provided
via a telecommunication transmitting station.
| |||
357.51 | .... Receivers (IPC): |
This subclass is indented under subclass 357.39. Subject matter comprising features of the detector and processor
of positioning signals from the satellite.
| |||
357.52 | ..... Specially adapted for specific applications (IPC): |
This subclass is indented under subclass 357.51. Subject matter comprising features of a receiver which make
it particularly useful for purposes other than or in addition to
the determination of position in general.
| |||||||
357.53 | ...... Aircraft landing systems (IPC): |
This subclass is indented under subclass 357.52. Subject matter comprising receivers specifically adapted
for use in guiding aircraft to the ground.
| |||
357.54 | ...... Anti-theft; abduction (IPC): |
This subclass is indented under subclass 357.52. Subject matter comprising receivers specifically adapted
for use in tracking or locating articles or persons illegally removed.
| |||
357.55 | ...... Emergency applications (IPC): |
This subclass is indented under subclass 357.52. Subject matter comprising receivers specifically adapted
for use in threatening situations.
| |||
357.56 | ...... Military applications (IPC): |
This subclass is indented under subclass 357.52. Subject matter comprising receivers specifically adapted
for use by armed forces.
| |||
357.57 | ...... Sporting applications (IPC): |
This subclass is indented under subclass 357.52. Subject matter comprising receivers specifically adapted
for use in games involving physical activity and skill.
| |||
357.58 | ..... Integrity monitoring, fault detection or fault isolation of space segment (IPC): |
This subclass is indented under subclass 357.51. Subject matter wherein the receiver detects improper functioning
of systems on the satellite or which prevents such improper functioning
from affecting the receiver’s position determination.
| |||
357.59 | ..... Interference related issues (IPC): |
This subclass is indented under subclass 357.51. Subject matter comprising means or processes to detect or
ameliorate the effect on the receiver of signals from undesired
sources.
| |||
357.61 | ..... Multipath-related issues (IPC): |
This subclass is indented under subclass 357.51. Subject matter whereby the effects of a signal from a satellite
arriving at the receiver over more than one path are detected or
ameliorated.
| |||
357.62 | ..... Testing, monitoring, correcting or calibrating of a receiver element (IPC): |
This subclass is indented under subclass 357.51. Subject matter comprising means or processes to insure the
proper functioning of the receiver.
| |||
357.63 | ..... Acquisition or tracking of signals transmitted by the system (IPC): |
This subclass is indented under subclass 357.51. Subject matter comprising receiver means or methods for
detecting a system signal or maintaining receipt of a system signal
over time.
| |||
357.64 | ...... Involving aiding data received from a cooperating element; e.g. assisted GPS (IPC): |
This subclass is indented under subclass 357.63. Subject matter wherein the acquisition or tracking of system
signals in the receiver is facilitated by data provided from elements
or subsystems, including receivers of other users, which
interact or communicate with the receiver.
| |||
357.65 | ...... Involving a sensor measurement for aiding acquisition or tracking (IPC): |
This subclass is indented under subclass 357.63. Subject matter wherein the acquisition or tracking of signals
transmitted by the systemis facilitated or assisted by the output
of a sensor device or element.
| |||
357.66 | ...... Creating, predicting or correcting ephemeris or almanac data within the receiver (IPC): |
This subclass is indented under subclass 357.63. Subject matter wherein ephemeris or almanac data transmitted
by, and normally received from, the satellite
is created, predicted or corrected by the receiver itself.
| |||
357.67 | ...... Satellite selection (IPC): |
This subclass is indented under subclass 357.63. Subject matter comprising receiver means or methods for
selecting which satellites to acquire or track.
| |||||
357.68 | ...... Carrier related (IPC): |
This subclass is indented under subclass 357.63. Subject matter wherein the acquisition or tracking of a
signal is based on a characteristic of the signal’s carrier
wave.
| |||
357.69 | ...... Code related (IPC): |
This subclass is indented under subclass 357.63. Subject matter wherein the acquisition or tracking of a
signal is based on a characteristic of the data modulated onto its
carrier wave.
| |||
357.71 | ..... Acquisition or tracking of other signals for positioning (IPC): |
This subclass is indented under subclass 357.51. Subject matter whereby a receiver detects or maintains a
signal other than a system signal.
| |||
357.72 | ..... Multimode operation in a single same satellite system; e.g. GPS L1/L2 (IPC): |
This subclass is indented under subclass 357.51. Subject matter in which the receiver processes two or more
different types of signals from the system wherein the different types
conventionally include different carrier frequencies (e.g., L1, L2, L5, etc.) or
different codes (e.g., C/A
and P).
| |||
357.73 | ..... Multimode operation in different systems which transmit time stamped messages; e.g. GPS/GLONASS (IPC): |
This subclass is indented under subclass 357.51. Subject matter in which the receiver is able to selectively
process signals from two or more different satellite radio beacon
positioning systems transmitting time-stamped messages.
| |||
357.74 | ..... Power consumption (IPC): |
This subclass is indented under subclass 357.51. Subject matter relating to electric power consumed by the
receiver.
| |||
357.75 | ..... Constructional details or hardware or software details of the signal processing chain (IPC): |
This subclass is indented under subclass 357.51. Subject matter comprising structural features of the receiver
or features of its data processing circuitry or of the control thereof.
| |||
357.76 | ...... Relating to the receiver front end (IPC): |
This subclass is indented under subclass 357.75. Subject matter relating to the processing of signals between
the receiver’s antenna and its data processing circuits.
| |||
357.77 | ...... Hardware or software details of the signal processing chain (IPC): |
This subclass is indented under subclass 357.75. Subject matter comprising that part of the receiver that
calculates its position from the data received by its antenna.
| |||
357.78 | ... Using Doppler frequency shift: |
This subclass is indented under subclass 357.2. Subject matter wherein position is determined using the
magnitude of the change in the observed wave cycles per time when
the satellite and object are moving with respect to each other.
| |||
358 | .. With satellite signal correction: |
This subclass is indented under subclass 352. Subject matter wherein the signal sent by the satellite
is corrected by a signal sent from a remote transmitter.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
359 | . Including antenna orientation: |
This subclass is indented under subclass 350. Subject matter including means to orient an antenna to a
predetermined position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
360 | . Including antenna pattern plotting: |
This subclass is indented under subclass 350. Subject matter including apparatus for providing a s:graphical
representation of the radiation properties of an antenna as a function
of space coordinates.
| |||
361 | . Including polarized signal communication transmitter or receiver: |
This subclass is indented under subclass 350. Subject matter including a transmitter/receiver apparatus
which utilizes radio wave energy have a quality that varies according
to the polarization of the signal.
SEE OR SEARCH CLASS:
| |||||||
362 | .. Receiver only: |
This subclass is indented under subclass 361. Subject matter including polarized signal receiving apparatus only. | |
363 | ... Circular: |
This subclass is indented under subclass 362. Subject matter including the simultaneous transmission of vertically and horizontally polarized radio waves, such that a vector representing the waves has a constant magnitude and varies continuously about a point. | |
364 | ... Elliptical: |
This subclass is indented under subclass 362. Subject matter including the polarization of the signal such that the wave vector for the signal rotates in an elliptical orbit about a point. | |
365 | .. Circular: |
This subclass is indented under subclass 361. Subject matter including the simultaneous transmission of vertically and horizontally polarized radio waves, such that a vector representing the waves has a constant magnitude and varies continuously about a point. | |
366 | .. Elliptical: |
This subclass is indented under subclass 361. Subject matter including the polarization of the signal such that the wave vector for the signal rotates in an elliptical orbit about a point. | |
367 | . Including directive communication system: |
This subclass is indented under subclass 350. Subject matter including a system for sending or receiving
information for some purpose other than direction finding.
SEE OR SEARCH CLASS:
| |||||||
368 | . Including a steerable array: |
This subclass is indented under subclass 350. Subject matter wherein an antenna array directional beam is adjusted by electrical means. | |
369 | .. Injection radiation type: |
This subclass is indented under subclass 368. Subject matter wherein a receiving station includes means
for emitting signals of such character as to facilitate the alignment
of the directional pattern of the receiver with the direction of
travel of the received signal.
| |||
370 | .. Retrodirective: |
This subclass is indented under subclass 368. Subject matter wherein a beam pattern is steered in the exact reverse direction of the direction of a received wave. | |
371 | .. With electronic scanning: |
This subclass is indented under subclass 368. Subject matter wherein a beam of radio-frequency
energy is directed successively over the antenna array elements
of a given region of the corresponding process in reception.
| |||
372 | ... Controlled: |
This subclass is indented under subclass 371. Subject matter including means to regulate the scanning
angle of the array antennas.
| |||
373 | .. With a matrix: |
This subclass is indented under subclass 368. Subject matter including an orderly two-dimensional array of circuit elements. | |
374 | .. With a switch: |
This subclass is indented under subclass 368. Subject matter including a connect/disconnect or circuit selector means in the interface between the steerable array and the electrical steering circuitry. | |
375 | .. With a delay line (e.g., serpentine transmission line, frequency scanning): |
This subclass is indented under subclass 368. Subject matter including a transmission line or equivalent device designed to retard a signal or wave for a predetermined length of time. | |
376 | .. Including a remote energy source: |
This subclass is indented under subclass 368. Subject matter including a separate transmitter of radio wave energy which is located apart from the steerable antenna array, and which drives the array. | |
377 | .. Including a computer: |
This subclass is indented under subclass 368. Subject matter including a device capable of accepting electronic signal information and performing arithmetic and logical operations with the information to supply a signal to the steerable antenna array circuitry. | |
378 | . Utilizing correlation techniques: |
This subclass is indented under subclass 350. Subject matter wherein the directive communication includes
circuitry which provides a relationship between the signals from
two or more antennas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
379 | .. Side lobe elimination: |
This subclass is indented under subclass 378. Subject matter wherein a receiving apparatus utilizing correlation
techniques suppresses at least one portion of the beam from an antenna other
than the main lobe.
SEE OR SEARCH CLASS:
| |||
380 | ... Sum of each antenna channel signal: |
This subclass is indented under subclass 379. Subject matter wherein the receiving apparatus contains at least two antenna channels (main and auxiliary) which are connected to a summing circuit. | |
381 | ... Difference of each antenna channel signal: |
This subclass is indented under subclass 379. Subject matter wherein the receiving apparatus contain at least two antenna channels (main and auxiliary) which are connected to a subtraction circuit. | |
382 | ... Mixing each antenna channel signal: |
This subclass is indented under subclass 379. Subject matter wherein the receiving apparatus contains at least two antenna channels (main and auxiliary) which are connected to a mixing circuit. | |
383 | .. Sum of each antenna channel signal: |
This subclass is indented under subclass 378. Subject matter wherein the receiving apparatus contains at least two antenna channels (main and auxiliary) which are connected to a summing circuit. | |
384 | .. Difference of each antenna channel signal: |
This subclass is indented under subclass 378. Subject matter wherein the receiving apparatus contains at least two antenna channels (main and auxiliary) which are connected to a subtraction circuit. | |
385 | . Beacon or receiver: |
This subclass is indented under subclass 350. Subject matter including means for sending or receiving
distinctive directive signals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
386 | .. With transmission of bearing or position determinative signals: |
This subclass is indented under subclass 385. Subject matter including one or more radiating stations
whose radiated energy when received, allows a determination
of the location of the receiving station in one or more lines or
planes having known fixed locations relative to the radiating stations.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
387 | ... Iso-chronic type: |
This subclass is indented under subclass 386. Subject matter wherein a distinctive signal or pulse, emitted
by one radiating station, and a similar signal or pulse, emitted
by a second remote radiating station and bearing a fixed time relationship
to the first signal or pulse, are received by a navigation
receiver and compared as to their time relationship.
| |||
388 | .... Loran: |
This subclass is indented under subclass 387. Subject matter wherein the radiating stations comprise a
master and two or more slave stations.
SEE OR SEARCH CLASS:
| |||||
389 | ..... Loran-C: |
This subclass is indented under subclass 388. Subject matter wherein the loran system provides a coarse
measurement of time-difference through the matching of
pulse envelopes, and a fine measurement by the comparing
of phase between the carrier wave.
| |||||
390 | ...... With cycle selection: |
This subclass is indented under subclass 389. Subject matter providing cycle tracking of received master an slave transmissions on a predetermined cycle identified from a predetermined Loran pulse envelope point. | |
391 | ..... Loran-A: |
This subclass is indented under subclass 389. Subject matter wherein the Loran system provides time-difference
measurement by matching the leading edges of the pulses (usually with
an oscilloscope).
| |||||||
392 | .... With automatic gain control: |
This subclass is indented under subclass 387. Subject matter including means to regulate by automatically equalizing or otherwise compensating for differences in the received signal strength in the navigation receiver. | |
393 | ... Iso-frequency type: |
This subclass is indented under subclass 386. Subject matter in which similar frequency modulated signals
or pulses, simultaneously emitted by two or more remote
radiating stations, are received and compared as to their instantaneous
frequencies.
| |||
394 | ... Iso-phase type: |
This subclass is indented under subclass 386. Subject matter wherein a distinctive signal or pulse in emitted by one radiating station and a similar signal or pulse (bearing a know, fixed phase relationship to the first signal or pulse) is emitted by a second remote radiating station, and wherein both are received and compared as to their phase relationship by a receiving station to provide a measure of the difference in distance between each radiating station and the receiving station, thereby enabling the fixing of the receiving station position along a known hyperbola or hyperboloid which are the loci of all points in space having a constant difference in distances to the radiating stations. | |
395 | .... With hetrodyne synchronization: |
This subclass is indented under subclass 394. Subject matter including spaced transmitting stations which
are not phase synchronized.
| |||
396 | .... Omega: |
This subclass is indented under subclass 394. Subject matter wherein hyperbolic lines of position are
determined by measuring the changes in distances from the transmitters
by counting radio-frequency wavelengths in space or lanes (iso-phase
lines) as a vehicle moves from a known position, the
lanes being counted by phase comparison with a stable oscillator aboard
the vehicle.
| |||
397 | .... Decca: |
This subclass is indented under subclass 394. Subject matter wherein sets of hyperbolic lines of position
are determined by comparison of the phase of (1) one
reference continuous wave signal from a centrally located master
transmitter with (2) each of several continuous
wave signals from plural slave transmitter located in a star pattern, each
about 70 nautical miles (130 kilometers) from
the master.
SEE OR SEARCH CLASS:
| |||||||
398 | ... Rotating beacon signal: |
This subclass is indented under subclass 386. Subject matter wherein the direction of the beacon radiation is continuously changing. | |
399 | ... TACAN: |
This subclass is indented under subclass 398. Subject matter including a complete ultra-high-frequency
polar coordinate (RHO-THETA) navigation
system using pulse techniques, wherein the distance (RHO) function
operates as distance measuring equipment (DME) and the
bearing function is derived by rotating the ground transmitter antenna
so as to obtain a rotating multiple pattern for coarse and fine bearing
information.
SEE OR SEARCH CLASS:
| |||||
400 | .... Receiver only: |
This subclass is indented under subclass 398. Subject matter comprising apparatus used in the reception of the rotating beacon signal. | |
401 | ..... VOR: |
This subclass is indented under subclass 400. Subject matter including receiver means operating at VHF
and providing radial lines of position in any direction as determined
by comparing the phase of the beacon signal, which is a variable
modulated signal, with that of a nondirectional reference modulated
signal, within the receiver.
| |||||||
402 | ...... Doppler: |
This subclass is indented under subclass 401. Subject matter wherein the variable signal has been developed
by sequentially feeding a radio-frequency signal to a multiplicity
of antennas and detecting the subsequent "Shift in the
signal frequency" by the receiver.
| |||||
403 | ....... With circular array of antennas: |
This subclass is indented under subclass 402. Subject matter wherein the antennas are arranged in a ring shaped pattern. | |
404 | .... VOR: |
This subclass is indented under subclass 398. Subject matter including means operating at VHF and providing
radial lines of position in any direction as determined by comparing within
the receiving equipment the phase of variably modulated beacon signal
with that of a modulated nondirectional reference signal.
| |||
405 | ..... Doppler: |
This subclass is indented under subclass 404. Subject matter wherein the variable signal has been developed
by sequentially feeding a radio-frequency signal to a multiplicity
of antennas and detecting the subsequent "Shift in the
signal frequency" by the receiver.
| |||||
406 | ...... With circular array of antennas: |
This subclass is indented under subclass 405. Subject matter wherein the antennas are arrayed in a ring shaped pattern. | |
407 | ... Fixed course of bearing indicating: |
This subclass is indented under subclass 386. Subject matter wherein signals transmitted from one or more
beacons are so modulated or directed that a characteristic signal
or lack of signal is received so long as the receiver is maintained
within a fixed bearing line or plane.
| |||
408 | .... Moving beam: |
This subclass is indented under subclass 407. Subject matter wherein the transmitted signal changes direction. | |
409 | .... With superimposed images: |
This subclass is indented under subclass 407. Subject matter wherein superposition of two or more visual
images is presented within the field of view of an aircraft pilot
as an aid to landing or navigation.
| |||
410 | .... Glide slope transmitter or receiver: |
This subclass is indented under subclass 407. Subject matter including means to transmit or receive bearing
line or plane informating including the landing or take-off path
of an aircraft where the glide slope is the vertical guidance portion
of the path.
SEE OR SEARCH CLASS:
| |||||||
411 | ..... Receiver only: |
This subclass is indented under subclass 410. Subject matter including only the apparatus to receive the beacon signal. | |
412 | ..... Transmitter only: |
This subclass is indented under subclass 410. Subject matter including only apparatus to transmit a glide slope signal. | |
413 | .... Localizer transmitter or receiver: |
This subclass is indented under subclass 407. Subject matter including transmission or reception of signals
for the lateral guidance of aircraft with respect to the center
line of a runway.
| |||
414 | .... Distinctive frequencies equi-signal type: |
This subclass is indented under subclass 407. Subject matter in which a beacon is caused to radiate along
two fixed, angularly disposed, directional patterns with radiations
in each pattern being given a modulation which is a distinctive
frequency.
| |||
415 | ..... Coded equi-signal (e.g., A and N type): |
This subclass is indented under subclass 414. Subject matter in which a beacon is caused to alternately
radiate in accordance with either one of two fixed angularly disposed
directional patterns with the alternations being so timed that the
radiation is each pattern is interrupted in accordance with a code
which is distinctive with that pattern.
| |||
416 | ..... Sequentially effective reflectors: |
This subclass is indented under subclass 414. Subject matter in which the alteration of the directional patterns is produced by alternating the effectiveness of two reflecting units. | |
417 | .. Direction-finding receiver only: |
This subclass is indented under subclass 385. Subject matter including a receiver station which is capable
of determining the time of travel or bearing of the received signals
with respect to the station.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
418 | ... Doppler: |
This subclass is indented under subclass 417. Subject matter wherein the received signals have an apparent
change in frequency due to the doppler effect.
| |||
419 | ... Portable: |
This subclass is indented under subclass 417. Subject matter wherein the direction finding receiver is capable of being carried or conveyed. | |
420 | ... With error or deviation compensator or eliminator: |
This subclass is indented under subclass 417. Subject matter including means which apply to the direction
indication, a correction for known errors of the indication or for
a desired deviation from the indication, or which are provided with
means to eliminate or reduce the effects of unwanted signals or
for deviations in the signal wave caused by disturbing influences.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
421 | .... Pulse-type noise elimination or compensation (e.g., sky waves): |
This subclass is indented under subclass 420. Subject matter wherein the signal is in the form of pulses.
| |||
422 | ... With self-orienting antenna pattern: |
This subclass is indented under subclass 417. Subject matter wherein the receiver automatically alters its directional characteristic to coincide with the line of travel of selected radio waves. | |
423 | .... Plural antennas: |
This subclass is indented under subclass 422. Subject matter wherein the receiver apparatus includes more than one antenna. | |
424 | ..... Tracking interferometer: |
This subclass is indented under subclass 423. Subject matter wherein means for the combined reception
pattern of the antennas is automatically adjusted to direction of
and in response to, an incoming signal.
| |||
425 | .... Conical scan antenna type: |
This subclass is indented under subclass 422. Subject matter wherein the antenna of the receiver is operated in a conical pattern about a pointing axis of the tracking system. | |
426 | .... Step track antenna type: |
This subclass is indented under subclass 422. Subject matter wherein the antenna of the receiver is aimed
at a signal source through rotation in discrete angular steps about
an axis.
| |||
427 | .... Monopulse or pseudo monopulse tracking antenna type: |
This subclass is indented under subclass 422. Subject matter wherein tracking of the signal source is accomplished by comparing overlapping pattern or lobe signals received by the receiver antenna to determine any discrepancy between the direction of the signal source, and any discrepancy is reduced to pointing error signals used for correcting the pointing direction of the antenna. | |
428 | ... With continuously movable antenna pattern: |
This subclass is indented under subclass 417. Subject matter wherein means are provided for constantly
altering a direction characteristic of the receiver.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
429 | .... Including a stationery antenna: |
This subclass is indented under subclass 428. Subject matter including a separate antenna that has an antenna pattern which does not move. | |
430 | .... Including plural moving antennas: |
This subclass is indented under subclass 428. Subject matter including more than one antenna that changes position, usually rotating about an axis. | |
431 | .... Including a goniometer: |
This subclass is indented under subclass 428. Subject matter wherein means receiving energy from two or more antennas having fixed angularly disposed directional characteristics, sets up, adjacent an orientable pick up device, singularly disposed fields whose resultant field bears a fixed angular relation to the direction of the received energy. | |
432 | ... With plural fixed antenna pattern comparing: |
This subclass is indented under subclass 417. Subject matter wherein the receiving station provides for comparison of the energy received by a plurality of fixed directional antennas or by two antennas having dissimilar or received directional characteristics. | |
433 | .... Successively commutated: |
This subclass is indented under subclass 432. Subject matter wherein the receiver is periodically connected to the various antennas in sequence. | |
434 | ..... Including more than antennas: |
This subclass is indented under subclass 433. Subject matter wherein more than two antennas are connected in sequence. | |
435 | ..... By diode switching: |
This subclass is indented under subclass 433. Subject matter wherein the receiver is periodically connected to the various antennas by diode switching means. | |
436 | ..... By modulation: |
This subclass is indented under subclass 433. Subject matter wherein commutation is effected by varying the amplitude, frequency, or phase of a wave by impressing one wave on another wave of constant properties. | |
437 | .... Including more than two antennas: |
This subclass is indented under subclass 432. Subject matter including more than two fixed directional antennas. | |
438 | .... Including separate indicators: |
This subclass is indented under subclass 432. Subject matter wherein the comparison is made by use of two or more distinct indicating devices. | |
439 | .... Including combined effect indicator: |
This subclass is indented under subclass 432. Subject matter wherein comparison is made by a single indicating device which is responsive to at least two of the quantities to be compared. | |
440 | .... Including a goniometer: |
This subclass is indented under subclass 432. Subject matter wherein means receiving energy from two or
more antennas having fixed angularly disposed directional characteristics,
sets up, adjacent an orientable pick up device, singularly disposed
fields whose resultant field bears a fix angular relation to the
direction of the received energy.
SEE OR SEARCH CLASS:
| |||
441 | ... Having a goniometer: |
This subclass is indented under subclass 417. Subject matter wherein means receiving energy from two or more antennas having fixed angularly disposed directional characteristics, sets up, adjacent an orientable pick up device, singularly disposed fields whose resultant field bears a fixed angular relation to the direction of the received energy. | |
442 | ... Having a phase detector: |
This subclass is indented under subclass 417. Subject matter wherein the received signals are coupled to a phase detector to provide resultant bearing signal. | |
443 | ... Having a direction indicator: |
This subclass is indented under subclass 417. Subject matter wherein the receiver includes a direction indicating device. | |
444 | ... Having plural receivers: |
This subclass is indented under subclass 417. Subject matter wherein each received signal is connected to a separate receiver. | |
445 | ... Having more than two antennas: |
This subclass is indented under subclass 417. Subject matter wherein the direction finding receiver is coupled to more than two antennas. | |
446 | .... Unequal distance between at least three antennas: |
This subclass is indented under subclass 445. Subject matter wherein the distance from the first receiving antenna to the second receiving receiving antenna is different than the distance from the second receiving antenna to the third receiving antenna. | |
447 | ... Having a spiral antenna: |
This subclass is indented under subclass 417. Subject matter wherein the direction finding receiver is coupled to an antenna which has the form of a helix. | |
448 | ... Having a coil or loop type antenna: |
This subclass is indented under subclass 417. Subject matter wherein the direction finding receiver is coupled to an antenna which consists of one or more loops of wire. | |
449 | ... Having a moving antenna: |
This subclass is indented under subclass 417. Subject matter wherein the direction finding receiver is coupled to an antenna which changes position, usually around an axis and is not classified elsewhere. | |
450 | . Position indicating (e.g., triangulation): |
This subclass is indented under subclass 350. Subject matter including apparatus for determining the position
in space of an object, vehicle or atmospheric condition by the reception of
signals not having distinctive bearing or position determinative
characteristics.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
451 | .. By computers: |
This subclass is indented under subclass 450. Subject matter including the use of a device capable of
accepting the signal information and applying prescribed computational
processes to this form of the information for the determination
of the position indication.
SEE OR SEARCH CLASS:
| |||||
452 | .. By plotting table: |
This subclass is indented under subclass 450. Subject matter including apparatus for indicating the position on a map. | |
453 | .. By reflected or repeated signal: |
This subclass is indented under subclass 450. Subject matter wherein the receiver signals have been deflected
by an object or a surface or have been retransmitted by a repeater
station.
| |||
454 | .. Traffic: |
This subclass is indented under subclass 450. Subject matter wherein the positions of a plurality of vehicles
or objects are continuously monitored either with respect to each
other or to a common reference point of both.
SEE OR SEARCH CLASS:
| |||||
455 | ... Having collision avoidance: |
This subclass is indented under subclass 454. Subject matter including means to enable vehicles to steer
clear of each other or other obstacles.
SEE OR SEARCH CLASS:
| |||||
456 | ... Having traffic control: |
This subclass is indented under subclass 454. Subject matter including means to regulate the positions
of the vehicles or objects.
SEE OR SEARCH CLASS:
| |||||||
457 | .. Land vehicle location (e.g., bus police car): |
This subclass is indented under subclass 450. Subject matter wherein the position of a means of conveyance over dry terrain is determined. | |
458 | .. Distance: |
This subclass is indented under subclass 450. Subject matter including means to determine the extent of a space between two points. | |
459 | .. Underground object location: |
This subclass is indented under subclass 450. Subject matter wherein the position of an atmosphere disturbance or nuclear detonation is determined. | |
460 | .. Storm or atomic explosion location: |
This subclass is indented under subclass 450. Subject matter wherein the position of an atmospheric disturbance or nuclear detonation is determined. | |
461 | .. With speed determination: |
This subclass is indented under subclass 450. Subject matter including means to determine the velocity
of an object.
SEE OR SEARCH CLASS:
| |||
462 | .. With altitude determination: |
This subclass is indented under subclass 450. Subject matter including means to determine the height above sea level of air object. | |
463 | .. Having plural transmitters or receivers: |
This subclass is indented under subclass 450. Subject matter wherein the position indicating device includes more than one transmitter or receiver. | |
464 | ... Plural transmitters only: |
This subclass is indented under subclass 463. Subject matter including more than one transmitter. | |
465 | ... Plural receivers only: |
This subclass is indented under subclass 463. Subject matter including more than one receiver. | |
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
This subclass has no definition. | |