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Class Information
Number: 342/37
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)
Description: 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.

Sub-classes under this class:

Class Number Class Name Patents
342/38 With altitude information 45
342/40 With defruiting or degarbling 56
342/39 With side lobe suppression 28

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
5619206 Secondary radar digital monopulse receiving apparatus and method Apr. 8, 1997
5596326 Secondary surveillance radar interrogation system using dual frequencies Jan. 21, 1997
5574459 Device for the detection and characterizing of radar pulses Nov. 12, 1996
5572214 Apparatus and method for frequency space modeling Nov. 5, 1996
5557278 Airport integrated hazard response apparatus Sep. 17, 1996
5554990 Airspace management system and method Sep. 10, 1996
5528244 Processing for mode S signals suffering multipath distortion Jun. 18, 1996
5486829 Method of communicating information between an S-mode secondary radar and a target Jan. 23, 1996
5483241 Precision location of aircraft using ranging Jan. 9, 1996
5459469 Air traffic surveillance and communication system Oct. 17, 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
5406288 Method and device to improve the probability of validity of the codes of secondary radar responses Apr. 11, 1995
5400031 Airport surface vehicle identification system and method Mar. 21, 1995
5387915 Method and apparatus for detecting and decoding transponder reply signals Feb. 7, 1995
5388047 Aircraft traffic alert and collision avoidance device Feb. 7, 1995
5367303 Parallel observer spatial evaluator Nov. 22, 1994
5363109 Method of correcting measurement errors caused by clock deviations in a secondary radar system Nov. 8, 1994
5334982 Airport surface vehicle identification Aug. 2, 1994
5321406 Method of track merging in an aircraft tracking system Jun. 14, 1994
5317316 Method of altitude track initialization in an aircraft tracking system May. 31, 1994
5302953 Secondary radar antenna operating in S mode Apr. 12, 1994
5235336 Method of bearing determination utilizing a bottom antenna in an aircraft tracking system Aug. 10, 1993
5198823 Passive secondary surveillance radar using signals of remote SSR and multiple antennas switched in synchronism with rotation of SSR beam Mar. 30, 1993
5196855 Secondary surveillance radar system Mar. 23, 1993
5179384 Device for identifying and localizing transponders Jan. 12, 1993
5140328 Virtual secondary surveillance radar using signals of remote SSR Aug. 18, 1992
5122804 Method and apparatus for ground radar information display system Jun. 16, 1992
5107268 Method of multipath track reduction in an aircraft tracking system Apr. 21, 1992
5075694 Airborne surveillance method and system Dec. 24, 1991
5073779 Beacon data acquisition and display system Dec. 17, 1991
5072224 Monopulse processing systems Dec. 10, 1991
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
5032841 Method and apparatus for ground radar information display system Jul. 16, 1991
4990921 Multi-mode microwave landing system Feb. 5, 1991
4975708 Time domain electronic antenna beam shaping Dec. 4, 1990
4970518 Air traffic control radar beacon system multipath reduction apparatus and method Nov. 13, 1990
4910526 Airborne surveillance method and system Mar. 20, 1990
4899156 Virtual ATCRBS using signals of remote SSR Feb. 6, 1990
4779096 Process and device for limiting traffic to be used with an interrogation/response system such as a secondary radar or IFF system Oct. 18, 1988
4733241 Position finding and collision avoidance system Mar. 22, 1988
4656477 Perfectioning in reply type radar systems, in particular the SSR type Apr. 7, 1987
RE32368 Collision avoidance system for aircraft Mar. 10, 1987
4486752 Pulse width discriminator applicable to ATC transponders Dec. 4, 1984
4418349 Airport surveillance system Nov. 29, 1983
4334224 Secondary surveillance radar Jun. 8, 1982
4319243 Airport-surveillance system Mar. 9, 1982
4296414 P-I-N type diode high frequency switch for secondary radar interrogation devices and transponders Oct. 20, 1981
4197536 Airport surface identification and control system Apr. 8, 1980
4179695 System for identification of aircraft on airport surface pathways Dec. 18, 1979
4115771 Passive ATCRBS using signals of remote SSR Sep. 19, 1978

1 2 3 4

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