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| Class 342 | COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) |
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![[List of Pre Grant Publications for class 342 subclass 1]](../as.gif) | ![[List of Patents for class 342 subclass 1]](../ps.gif) | 1 | RADIO WAVE ABSORBER |
| | 5 | RADAR REFLECTOR |
| | 6 |  With modulation |
| | 7 | Corner |
| | 10 | Inflatable or collapsable |
| | 11 | With spherical lens (e.g., Luneberg lens) |
| | 12 | Chaff |
| | 13 | RADAR EW (ELECTRONIC WARFARE) |
| | 14 | ECM (Electronic countermeasures, i.e., jamming) |
| | 16 | ECCM (Electronic counter-countermeasures, i.e., antijamming) |
| | 20 | Detection of surveilance |
| | 21 | BASE BAND SYSTEM |
| | 22 | TRANSMISSION THROUGH MEDIA OTHER THAN AIR OR FREE SPACE |
| | 23 | BERTHING OR DOCKING |
| | 24 | BLIND AID |
| | 25R | SYNTHETIC APERTURE RADAR |
| | 25A | Mapping or imaging using synthetic aperture radar (EPO) |
| | 25B |  Specially adapted for moving target detection (EPO) |
| | 25C | Combined with monopulse or interferometric (EPO) |
| | 25D | With frequency domain processing of the SAR signals in azimuth (EPO) |
| | 25E | With time domain processing of the SAR signals in azimuth, e.g. time focusing (EPO) |
| | 25F | Particular SAR processing techniques (e.g., squint mode, doppler beam-sharpening mode, spotlight mode, bistatic SAR, inverse SAR) (EPO) |
| | 26R | RADAR FOR METEOROLOGICAL USE (EPO) |
| | 26A | Mounted on satellite (EPO) |
| | 26B | Mounted on aircraft (EPO) |
| | 26C | Mounted on ship (EPO) |
| | 26D | Ground based (EPO) |
| | 27 | PRESENCE DETECTION ONLY |
| | 29 | AIRCRAFT COLLISION AVOIDANCE SYSTEM (CAS) |
| | 33 | AIRCRAFT LANDING SYSTEM |
| | 36 | AIR TRAFFIC CONTROL |
| | 41 | SHIP COLLISION AVOIDANCE |
| | 42 | RADAR TRANSPONDER SYSTEM |
| | 43 | Combined with primary radar system |
| | 44 | Unique identity |
| | 45 | IFF or SIF |
| | 46 | Navigational |
| | 50 | With Telemetry |
| | 51 | Radar transponder only |
| | 52 | COMBINED WITH DIVERSE TYPE RADIANT ENERGY SYSTEM |
| | 53 | With infrared device |
| | 54 | With laser |
| | 55 | With television |
| | 56 | With direction finding |
| | 57 | With radio voice communication |
| | 58 | With transmission to a remote station |
| | 59 | PLURAL RADAR |
| | 60 | TRANSMITTING INTELLIGENCE |
| | 61 | RETURN SIGNAL CONTROLS EXTERNAL DEVICE |
| | 62 | Missile or spacecraft guidance |
| | 63 | Aircraft guidance |
| | 66 | Camera |
| | 67 | Gun (e.g., fire control) |
| | 68 | Proximity fuze |
| | 69 | Device actuated by presence of land vehicle |
| | 70 | Radar mounted on and controls land vehicle |
| | 73 | RETURN SIGNAL CONTROLS RADAR SYSTEM |
| | 74 | Antenna control |
| | 75 | Physical orientation |
| | 76 |  With ground tracking |
| | 77 | With signal error correction |
| | 78 | Conical scan |
| | 79 | Lobe switching |
| | 80 | Monopulse |
| | 81 | Beam direction by phase or frequency control |
| | 82 | Transmitter |
| | 83 | Signal phase or frequency other than pulse repetition frequency (PRF) |
| | 88 | Transmission timing (e.g., ring around) |
| | 89 | Receiver |
| | 104 | DETERMINING VELOCITY |
| | 105 | Other than doppler (e.g., range rate) |
| | 106 | Combined with determining acceleration |
| | 107 | Combined with determining distance and direction |
| | 109 | Combined with determining distance |
| | 110 | With plural fixed range gates |
| | 111 | With plural receiver frequency band separation |
| | 112 | With plural frequencies transmission |
| | 113 | Combined with determining direction (i.e., bearing) |
| | 114 | Combined with determining sense of motion (i.e., approaching or receding) |
| | 115 | Digital |
| | 116 | With plural received frequency band separation |
| | 117 | With plural beams (e.g., "Janus") |
| | 118 | DETERMINING DISTANCE |
| | 119 | Miss distance indicator (MDI) |
| | 120 | Altimeter |
| | 123 | Height finder |
| | 124 | Material level within container |
| | 125 | With remote cooperating station |
| | 126 | Triangulation |
| | 127 | Phase comparison |
| | 128 | With frequency modulation |
| | 129 | Plural frequencies transmitted |
| | 130 | Plural modulation |
| | 133 | Combined with determining direction |
| | 134 | With pulse modulation |
| | 135 | Digital (e.g., with counter) |
| | 137 | With variable pulse repetition frequency (PRF) or pulse width |
| | 138 | With type "A" or "J" range scope |
| | 139 | Combined with determining direction |
| | 145 | With correlation |
| | 146 | Combined with determining direction |
| | 147 | DETERMINING DIRECTION |
| | 148 | Low angle processing |
| | 149 | Monopulse |
| | 150 | With common IF channel |
| | 151 | With channel equalization |
| | 152 | With quadrature difference processing |
| | 153 | With particular antenna or waveguide |
| | 154 | Combined with beam steering |
| | 155 | Lobe switching |
| | 156 | Interferometer |
| | 157 | With frequency or phase steering |
| | 158 | Scanning |
| | 159 | CLUTTER ELIMINATION |
| | 165 | TESTING OR CALIBRATING OF RADAR SYSTEM |
| | 175 | WITH PARTICULAR CIRCUIT |
| | 176 | Display |
| | 177 | Plural |
| | 178 | Projection type |
| | 179 | Image production |
| | 180 | Stereoscopic or tridimensional |
| | 181 | Color |
| | 182 | Electronic marker generation |
| | 184 | With stabilization (e.g., True Motion, True North) |
| | 185 | Scan conversion |
| | 186 | With sweep expansion |
| | 187 | Augmenter |
| | 188 | With polarization |
| | 189 | For correlation |
| | 190 | With recording |
| | 192 | Spectrum analysis |
| | 194 | Complex signal (in phase and quadrature) |
| | 195 | Digital processing |
| | 198 | For receiver protection |
| | 199 | Automatic frequency control (AFC) |
| | 200 | For frequency modulation |
| | 202 | For pulse modulation |
| | 205 | Sensitivity time control (STC) |
| | 350 | DIRECTIVE |
| | 351 | Including a radiometer |
| | 352 | Including a satellite |
| | 353 | Having a signal repeater |
| | 354 | With beam steering |
| | 355 | With control of satellite attitude |
| | 356 | Synchronous satellite |
| | 357.01 | With position indicating |
| | 357.02 | With accuracy enhancing |
| | 357.05 | Using Doppler frequency shift |
| | 357.06 | Using Global Positioning Satellite (GPS or Glonass) |
| | 357.07 |  Tracking or monitoring (i.e., lost or stolen vehicles) |
| | 357.08 | Determining relative position (e.g., distance or direction) |
| | 357.09 | With transmission of location-indicative information to or from a remote station |
| | 357.1 | Combined with telecommunication |
| | 357.11 | Attitude determination |
| | 357.12 | GPS receiver signal processing |
| | 357.13 | With storage device (i.e., map or database) |
| | 357.14 | Combined with secondary navigation system (i.e., LORAN, gyroscope, inertial, dead reckoning, etc.) |
| | 357.15 | Satellite selection (i.e., tracking or acquisition) |
| | 357.16 | Using low Earth orbit (telecommunication) satellites |
| | 357.17 | With particular action taken responsive to position |
| | 358 | With satellite signal correction |
| | 359 | Including antenna orientation |
| | 360 | Including antenna pattern plotting |
| | 361 | Including polarized signal communication transmitter or receiver |
| | 367 | Including directive communication system |
| | 368 | Including a steerable array |
| | 369 | Injection radiation type |
| | 370 | Retrodirective |
| | 371 | With electronic scanning |
| | 373 | With a matrix |
| | 374 | With a switch |
| | 375 | With a delay line (e.g., serpentine transmission line, frequency scanning) |
| | 376 | Including a remote energy source |
| | 377 | Including a computer |
| | 378 | Utilizing correlation techniques |
| | 379 | Side lobe elimination |
| | 380 | Sum of each antenna channel signal |
| | 381 | Difference of each antenna channel signal |
| | 382 | Mixing each antenna channel signal |
| | 383 | Sum of each antenna signal |
| | 384 | Difference of each antenna channel signal |
| | 385 | Beacon or receiver |
| | 386 | With transmisson of bearing or position determinative signals |
| | 387 | Iso-chronic type |
| | 393 | Iso-frequency type |
| | 394 | Iso-phase type |
| | 398 | Rotating beacon signal |
| | 399 | Tacan |
| | 407 | Fixed course or bearing indicating |
| | 417 | Direction-finding receiver only |
| | 418 | Doppler |
| | 419 | Portable |
| | 420 | With error or deviatioan compensator or eliminator |
| | 422 | With self-orienting antenna pattern |
| | 423 | Plural antennas |
| | 425 | Conical scan antenna type |
| | 426 | Step track antenna type |
| | 427 | Monopulse or pseuodo monopulse tracking antenna type |
| | 428 | With continuously movable antenna pattern |
| | 432 | With plural fixed antenna pattern comparing |
| | 433 | Successively commutated |
| | 437 | Including more than two antennas |
| | 438 | Including separate indicators |
| | 439 | Including combined effect indicator |
| | 440 | Including a goniometer |
| | 441 | Having a goniometer |
| | 442 | Having a phase detector |
| | 443 | Having a direction indicator |
| | 444 | Having plural receivers |
| | 445 | Having more than two antennas |
| | 447 | Having a spiral antennas |
| | 448 | Having a coil or loop type antenna |
| | 449 | Having a moving antenna |
| | 450 | Position indicating (e.g., triangulation) |
| | 451 | By computer |
| | 452 | By plotting table |
| | 453 | By deflected or repeated signal |
| | 454 | Traffic |
| | 457 | Land vehicle location (e.g., bus, police car |
| | 458 | Distance |
| | 459 | Underground object location |
| | 460 | Storm or atomic explosion location |
| | 461 | With speed determination |
| | 462 | With altitude determination |
| | 463 | Having plural transmitters or receivers |
| FOREIGN ART COLLECTIONS | ||
| FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
| Any foreign patents or non-patent literature from subclasses that have been reclassified have been transferred directly to FOR Collections listed below. These Collections contain ONLY foreign patents or non-patent literature. The parenthetical references in the Collection titles refer to the abolished subclasses from which these Collections were derived. | ||
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