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Class Information
Number: 342/446
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Directive > Beacon or receiver > Direction-finding receiver only > Having more than two antennas > Unequal distance between at least three antennas
Description: 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.










Patents under this class:

Patent Number Title Of Patent Date Issued
8665142 Antenna device and radar device Mar. 4, 2014
8665153 Array signal processing device Mar. 4, 2014
7671801 Armor for an electronically scanned array Mar. 2, 2010
7213442 Methods of arranging transducers and transducer arrays having reduced phase ambiguity for determining direction of arrival of received signals May. 8, 2007
6573865 Method and apparatus for radio location Jun. 3, 2003
6275189 Passive target detection and identification system Aug. 14, 2001
5884215 Method and apparatus for covariance matrix estimation in a weighted least-squares location solution Mar. 16, 1999
5745078 Method and apparatus for radio location Apr. 28, 1998
5657027 Two dimensional interferometer array Aug. 12, 1997
5592181 Vehicle position tracking technique Jan. 7, 1997
5592180 Direction finding and mobile location system for trunked mobile radio systems Jan. 7, 1997
5583517 Multi-path resistant frequency-hopped spread spectrum mobile location system Dec. 10, 1996
4864309 Microwave radiometer Sep. 5, 1989
4780722 Radio direction-finding Oct. 25, 1988
4701762 Three-dimensional electromagnetic surveillance system and method Oct. 20, 1987
4449192 Radio wave angle of incidence measurement apparatus May. 15, 1984
4057803 Adaptive direction of arrival antennae system Nov. 8, 1977
4023176 Beacon tracking display system May. 10, 1977
4001828 Beacon tracking receiver Jan. 4, 1977











 
 
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