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Class Information
Number: 342/398
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 > Rotating beacon signal
Description: Subject matter wherein the direction of the beacon radiation is continuously changing.










Patents under this class:

Patent Number Title Of Patent Date Issued
8519889 Method and apparatus for estimating location of a wireless station using multi-beam transmission Aug. 27, 2013
8149086 Security systems and methods relating to travelling vehicles Apr. 3, 2012
7936305 System and method for determining attitude using spatial shift key (SSK) modulation signatures May. 3, 2011
7411548 Reference beacon identification using transmission sequence characteristics Aug. 12, 2008
7408507 Antenna calibration method and system Aug. 5, 2008
7053829 Method for determining a position with the aid of a radio signal having a rotating transmission characteristic May. 30, 2006
6023240 Method for determining a phase measurement error map using rotating antenna information Feb. 8, 2000
5945947 Synthetic doppler direction finder for use with FSK encoded transmitters Aug. 31, 1999
5835059 Data link and method Nov. 10, 1998
5574467 Doppler positioning using non-planar movement of transmitting source and receiving source Nov. 12, 1996
5357259 Aircraft deployable rotating phased array antenna Oct. 18, 1994
5247311 Loro antenna and pulse pattern detection system Sep. 21, 1993
5243397 Distance measuring system Sep. 7, 1993
5196856 Passive SSR system utilizing P3 and P2 pulses for synchronizing measurements of TOA data Mar. 23, 1993
4939522 Method and system for monitoring vehicle location Jul. 3, 1990
4882590 Method for locating a radio frequency emitter Nov. 21, 1989
4685800 Alignment system Aug. 11, 1987
4438439 Self-survey means Mar. 20, 1984
4385299 Apparatus for transmitting bearing information May. 24, 1983
4301455 Groundspeed measurement system Nov. 17, 1981
4263596 Reference station for a distance-measuring system Apr. 21, 1981
4260992 Radio navigation antenna system for aircraft Apr. 7, 1981
4197542 Radio navigation system Apr. 8, 1980
4193075 Low angle elevation guidance system Mar. 11, 1980
4109249 Scanning beam receiver Aug. 22, 1978
4081669 Recognition system for class II robots Mar. 28, 1978
4080600 Scanning beam radio navigation method and apparatus Mar. 21, 1978
4071847 Radio navigation antenna system Jan. 31, 1978
4053892 System for enabling coherent signal processing at a remote receiving station Oct. 11, 1977
RE29260 Proximity indication with range and bearing measurements Jun. 7, 1977
4007991 System for transmitting position information Feb. 15, 1977
4007437 Acoustic foghorn for directional signaling Feb. 8, 1977
3983561 High frequency wave radiation system producing a rotating beam defining a predetermined geometrical pattern Sep. 28, 1976
3971026 Multiple beam glide slope radio navigation method with two classes of beams Jul. 20, 1976
3936829 Method of radio navigation Feb. 3, 1976
3935576 Broadband beacon antenna system Jan. 27, 1976











 
 
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