| US 7,541,968 B2 | ||
| System and method for detecting an intruder using impulse radio technology | ||
| David J. Hall, Madison, Ala. (US); Scott M. Yano, Sunbury, Ohio (US); and Hans G. Schantz, Huntsville, Ala. (US) | ||
| Assigned to Time Domain Corp., Huntsville, Ala. (US) | ||
| Filed on Oct. 29, 2006, as Appl. No. 11/554,025. | ||
| Application 11/554025 is a continuation of application No. 10/971878, filed on Oct. 22, 2004, granted, now 7,129,886. | ||
| Prior Publication US 2008/0111686 A1, May 15, 2008 | ||
| Int. Cl. G01S 13/56 (2006.01); G01S 13/00 (2006.01) | ||
| U.S. Cl. 342—28 [342/21; 342/27; 342/59; 342/118; 342/126; 342/450; 342/463; 342/465; 375/130; 375/140] | 20 Claims |
| 8. A system for relating the position of an object to a perimeter of a zone, the system comprising:
a first UWB radio;
three or more second UWB radios; and
a processor for generating three or more first waveforms, each of the three or more first waveforms indicating a multipath
structure of a propagation channel of first UWB signals having been transmitted from the first UWB radio to a corresponding
one of the three or more second UWB radios, defining the perimeter of the zone based upon a person traversing a perimeter
of the zone, generating three or more second waveforms, each of the three or more second waveforms indicating a multipath
structure of a propagation channel of second UWB signals having been transmitted from the first UWB radio to the corresponding
one of the three or more second UWB radios, comparing each one of the three or more first waveforms to the corresponding one
of the three or more second waveforms to determine a position of an object, and relating the position of the object to the
perimeter of the zone.
|