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Class Information
Number: 342/40
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Air traffic control > Secondary surveilance radar (ssr) or air traffic control radar beacon system (atcrbs) > With defruiting or degarbling
Description: Subject matter including means to eliminate random nonsynchronous unintentional return signals in a beacon system or to decode multiple overlapping signal transmission interference.

Patents under this class:
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Patent Number Title Of Patent Date Issued
7936300 Method for reducing multipath propagation effects during the processing of replies in mode "S" May. 3, 2011
7920071 Augmented reality-based system and method providing status and control of unmanned vehicles Apr. 5, 2011
7688250 Method for pre-detecting responses in a secondary radar or application to the detection of mode S responses Mar. 30, 2010
7663531 Secondary surveillance radar system, and ground system for use therein Feb. 16, 2010
7619557 Method and device for filtering a video signal received by a secondary radar, particularly in order to eliminate mode S replies Nov. 17, 2009
7570195 High-capacity location and identification system for cooperating mobiles with frequency agile and time division transponder device on board Aug. 4, 2009
7551120 Method and a system for filtering tracks originating from several sources and intended for several clients to which they are supplied Jun. 23, 2009
7397415 System and method for detecting and de-interleaving radar emitters Jul. 8, 2008
7277043 Tactical aircraft check algorithm, system and method Oct. 2, 2007
7095360 Secondary surveillance radar system, ground equipment for use therein, and response signal checking method applied thereto Aug. 22, 2006
6985102 Method and system for deinterleaving Jan. 10, 2006
6819282 Super-resolution processor/receiver to discriminate superimposed secondary surveillance radar (SSR) replies and squitter Nov. 16, 2004
6727842 Digital IF processor Apr. 27, 2004
6573858 Tandem-cycle target/track assignment method in combined radar/ADS surveillance environment Jun. 3, 2003
6483453 Method for reducing transmit power for traffic alert and collision avoidance systems and airborne collision avoidance systems Nov. 19, 2002
6337652 SSR station and aircraft secondary surveillance network Jan. 8, 2002
6005510 Method for the processing of multiple paths Dec. 21, 1999
5920278 Method and apparatus for identifying, locating, tracking, or communicating with remote objects Jul. 6, 1999
5596326 Secondary surveillance radar interrogation system using dual frequencies Jan. 21, 1997
5583505 Radar pulse detection and classification system Dec. 10, 1996
5574459 Device for the detection and characterizing of radar pulses Nov. 12, 1996
5486829 Method of communicating information between an S-mode secondary radar and a target Jan. 23, 1996
5477225 Method and apparatus for associating target replies with target signatures Dec. 19, 1995
5463398 Method and apparatus for multiple reply rejection when decoding transponder replay signals Oct. 31, 1995
5455586 Pulse recognition method and device, and use thereof for the filtering of the S mode responses of a secondary radar Oct. 3, 1995
5432517 Method and device for the filtering of responses in a secondary radar extractor Jul. 11, 1995
5406288 Method and device to improve the probability of validity of the codes of secondary radar responses Apr. 11, 1995
5394152 Radar processing apparatus and method Feb. 28, 1995
5387915 Method and apparatus for detecting and decoding transponder reply signals Feb. 7, 1995
5367303 Parallel observer spatial evaluator Nov. 22, 1994
5341139 Method and device to detect the garbling of pulses received by a secondary radar Aug. 23, 1994
5317316 Method of altitude track initialization in an aircraft tracking system May. 31, 1994
5317317 Method and device to detect the garbling of pulses received by a secondary radar by phase analysis May. 31, 1994
5264853 Method of reducing false tracks due to suppression pulse replies in an aircraft tracking system Nov. 23, 1993
5220329 Monopulse reply extractor for SSR navigation systems Jun. 15, 1993
5218365 Beacon interrogator beamwidth control using sidelobe signal integration in transponders Jun. 8, 1993
5142287 Technique for demodulating and decoding MLS DPSK transmissions using a digital signal processor Aug. 25, 1992
5126744 Beacon and mode-4 defruiter Jun. 30, 1992
5089822 Interrogation signal processor for air traffic control communications Feb. 18, 1992
5081457 Apparatus for reducing synchronous fruit in TCAS surveillance systems Jan. 14, 1992
5063386 Device for the detection of the signals of transponders interrogated by a secondary radar in the presence of multiple-path phenomena Nov. 5, 1991
4945550 ATCRBS/SIF/TCAS reply decoder Jul. 31, 1990
4899157 Leading edge detector/reply quantizer Feb. 6, 1990
4896158 Beacon fruit filter Jan. 23, 1990
4796030 Dual threshold amplitude detector Jan. 3, 1989
4761651 Pulse discriminating system for reply signals in a transponder Aug. 2, 1988
4642638 Apparatus for generating enhanced/regenerative bracket decode signals Feb. 10, 1987
4314247 Degarbler for an interrogator-transponder system Feb. 2, 1982
4180815 Radio identification systems Dec. 25, 1979
4174519 Method for the improved utilization of response signals in a _secondary radar system and a secondary radar system for implementing the method Nov. 13, 1979

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