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Class Information
Number: 342/407
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Directive > Beacon or receiver > With transmisson of bearing or position determinative signals > Fixed course or bearing indicating
Description: Subject matter wherein signals transmitted from one or more beacons are so modulated or directed that a characteristic signal or lack of signal is received so long as the receiver is maintained within a fixed bearing line or plane.










Sub-classes under this class:

Class Number Class Name Patents
342/414 Distinctive frequencies equi-signal type 9
342/410 Glide slope transmitter or receiver 36
342/413 Localizer transmitter or receiver 41
342/408 Moving beam 53
342/409 With superimposed images 5


Patents under this class:

Patent Number Title Of Patent Date Issued
8633855 Pseudo-omni-directional beamforming with multiple narrow-band beams Jan. 21, 2014
8239077 Method and device for detecting noise on a guide signal of LOC type received by an aircraft Aug. 7, 2012
8164521 Pseudo-omni-directional beamforming with multiple narrow-band beams Apr. 24, 2012
7817065 Airport viewing system for an aircraft Oct. 19, 2010
7626544 Robust low-frequency spread-spectrum navigation system Dec. 1, 2009
7599678 Processor for a passive ranger Oct. 6, 2009
7576693 Position determination by directional broadcast Aug. 18, 2009
6901329 Beacon-based electronic guide system May. 31, 2005
6847327 Base station, base station module and method for direction of arrival estimation Jan. 25, 2005
5922031 Low-altitude piloting method Jul. 13, 1999
5689273 Aircraft surface navigation system Nov. 18, 1997
5526000 Procedure and automatic control device for an airborne vehicle in low altitude overflight Jun. 11, 1996
5250955 State entry beacon system Oct. 5, 1993
5218360 Millimeter-wave aircraft landing and taxing system Jun. 8, 1993
5014067 Integrated landing system May. 7, 1991
4990921 Multi-mode microwave landing system Feb. 5, 1991
4893127 Radar navigation system Jan. 9, 1990
4811022 Scanning antenna having phase center diversity Mar. 7, 1989
4789864 Low elevation guidance system Dec. 6, 1988
4646097 Off-channel frequency discriminator circuit for use in a precision distance measuring equipment (DME/P) receiver Feb. 24, 1987
4642646 Automatic sensitivity adjustment and audio muting for aircraft marker beacon receiver Feb. 10, 1987
4333081 Monitoring system for scanning-beam microwave landing apparatus Jun. 1, 1982
4125836 Electrically scanned antenna system and modulator for omnidirectional radio range Nov. 14, 1978
3989209 Apparatus for guiding an aircraft along a multi-segment path when landing the craft Nov. 2, 1976











 
 
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