Application of GPS signal processing to attitude determination and communication
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01S-019/53
G01S-019/40
G01S-005/02
G01S-019/54
G01S-019/55
출원번호
US-0086068
(2011-04-13)
등록번호
US-9651679
(2017-05-16)
발명자
/ 주소
Tollefson, William G.
출원인 / 주소
Rockwell Collins, Inc.
대리인 / 주소
Gerdzhikov, Angel N.
인용정보
피인용 횟수 :
0인용 특허 :
17
초록▼
The present invention is a method for dynamically determining attitude of a mobile platform via a system implemented on-board the platform. The method includes providing initialization data for the platform from a memory of the system to a processor of the system, the initialization data including p
The present invention is a method for dynamically determining attitude of a mobile platform via a system implemented on-board the platform. The method includes providing initialization data for the platform from a memory of the system to a processor of the system, the initialization data including platform position platform velocity data, and platform heading for a first point in time. The method includes receiving RF signals via an antenna array of the system at a second point in time subsequent to the first point in time. The method includes providing RF inputs including the received signals from the antenna array to a receiving unit of the system, and then from the receiving unit to a processor of the system. The processor then processes the signals and, based on the processed signals and initialization data, determines an attitude of the platform, the attitude corresponding to the second point in time.
대표청구항▼
1. A system comprising: a processor, an antenna and a memory, the processor coupled to the antenna, the memory and a mobile platform, the processor configured to:obtain a priori position data from the memory at a first point in time;receive a plurality of signals from one or more emitters at a secon
1. A system comprising: a processor, an antenna and a memory, the processor coupled to the antenna, the memory and a mobile platform, the processor configured to:obtain a priori position data from the memory at a first point in time;receive a plurality of signals from one or more emitters at a second point in time, the plurality of signals comprising one or more signals with directional reception information, the one or more emitters comprising at least one fixed-location emitter and a plurality of transmitters, the plurality of transmitters comprising Global Positioning System (GPS) satellites;determine which of the one or more signals of the plurality of signals has the directional reception information;selectively amplify the one or more signals having the directional reception information; anddetermine an attitude of the mobile platform at approximately the second point in time based on the a priori position data, the directional reception information, known GPS constellation information for the GPS satellites, and known information associated with the at least one fixed-location emitter and the one or more signals selectively amplified. 2. The system of claim 1, wherein the antenna comprises an antenna array, the antenna array being connected to a receiver, the antenna array being configured for receiving the plurality of signals comprising Radio Frequency signals including at least one of: satellite navigation signals and ground based known location transmitter signals. 3. The system of claim 2, wherein the antenna array is a Global Positioning System antenna array and the satellite navigation signals are Global Positioning System signals. 4. The system of claim 2, wherein the antenna array is an integrated Navigation and Communication antenna array. 5. The system of claim 2, wherein the receiver is one of: a Global Positioning System receiver and an integrated Navigation and Communication receiver. 6. The system of claim 1, wherein the mobile platform is one of: a vehicle, a projectile, an aircraft, a precision-guided munition, and a spacecraft. 7. The system of claim 1, wherein the attitude is a first attitude, wherein the processor is further configured to determine a second attitude at a third point in time, and wherein at least two of the initialization data and the first point in time, the first attitude and the second point in time, and the second attitude and the third point in time are used to dynamically determine attitude of the mobile platform versus time. 8. A method, comprising: obtaining, by at least one processor, a prior position data of a mobile platform from non-transitory memory at a first point in time;receiving, by at least one antenna, a plurality of signals from one or more emitters at a second point in time, the plurality of signals comprising one or more signals with directional reception information, the one or more emitters comprising a fixed-location emitter and a plurality of transmitters, the plurality of transmitters comprising Global Positioning System (GPS) satellites;determining, by the at least one processor, which of the one or more signals of the plurality of signals has the directional reception information;selectively amplifying, by at least one processor, the one or more signals having the directional reception information; anddetermining, by the at least one processor, an attitude of the mobile platform at approximately the second point in time based on the a priori position data, the directional reception information, known GPS constellation information for the GPS satellites, and known information associated with the fixed-location emitter and the one or more signals selectively amplified. 9. The method of claim 8, further comprising processing said plurality of signals, wherein the at least one antenna comprises an antenna array and processing said plurality of signals comprises sweeping the antenna array. 10. The method of claim 9, wherein processing said received signals further comprises: locating signals of interest from the plurality of signals during said sweeping of the antenna array. 11. The method of claim 10, wherein the selectively amplifying, by the at least one processor, the one or more signals having the directional reception information is based on said locating of the signals of interest to achieve a desired sensitivity pattern in a desired direction. 12. The method of claim 11, wherein the a priori position data comprises initialization data, and wherein the method further comprises continuously updating the attitude of the platform over time without the use of an inertial measurement unit (IMU). 13. The method of claim 12, wherein the platform comprises a precision-guided munition, and wherein the plurality of transmitters further comprise at least one of: radio towers and beacons. 14. The method of claim 12, further comprising combining the plurality of received signals according to a beamforming process, wherein results of the beamforming process comprise the selectively amplifying, by the at least one processor, the one or more signals having the directional reception information. 15. A computer package, comprising: a non-transitory processor-readable medium configured for communicative coupling with a processor and an antenna of a mobile-based platform, the non-transitory processor-readable medium comprising instructions, which when executed, cause the processor to perform steps comprising:obtain a priori position data at a first point in time;receive a plurality of signals from one or more emitters at a second point in time, the plurality of signals comprising one or more signals with directional reception information, the one or more emitters comprising at least one fixed-location emitter and a plurality of transmitters, the plurality of transmitters comprising Global Positioning System (GPS) satellites;determine which of the one or more signals of the plurality of signals has the directional reception information;selectively amplify the one or more signals having the directional reception information; anddetermine an attitude of the platform at approximately the second point in time based on the a priori position data, the directional reception information, known GPS constellation information for the GPS satellites, and known information associated with the at least one fixed-location emitter and the one or more signals selectively amplified. 16. The computer package of claim 15, wherein the antenna comprises an antenna array, and wherein the processor is configured to determine which of the one or more signals of the plurality of signals has the directional reception information by sweeping the antenna array and locating signals of interest from the plurality of received signals during said sweeping of the antenna array. 17. The computer package of claim 16, wherein the processor is configured to selectively amplify the one or more signals having the directional reception information based on the locating signals of interest. 18. The computer package of claim 17, wherein the directional reception information is first directional reception information,wherein the a priori data comprises initialization data, the initialization data comprises position data for the platform, velocity data for the platform, and a heading of the platform, the a priori data corresponding to the first point in time, andwherein the processor is further configured to utilize the initialization data, utilize second directional reception information, and utilize known information associated with the fixed-location emitter and the one or more signals selectively amplified to determine a second attitude at a third point in time. 19. The computer package of claim 18, wherein the fixed-location emitter is a single emitter having a predetermined location or a constellation of GPS satellites with known information about the GPS satellites, wherein the known information about the GPS satellites comprises a known trajectory, and wherein the mobile-based platform is a precision-guided munition. 20. The computer package of claim 15, wherein the a priori data comprises initialization data including position data for the mobile-based platform, velocity data for the mobile-based platform, and a heading of the mobile-based platform, and wherein a) the initialization data and the first point in time, and b) the attitude and the second point in time are used to determine mobile-based platform attitude versus time. 21. The computer package of claim 15, wherein the attitude is a first attitude, and wherein the processor is further configured to utilize the a priori data, utilize the directional reception information, utilize the known information associated with the at least one fixed-location emitter and the one or more signals selectively amplified, and utilize the known GPS constellation information for the GPS satellites to determine a second attitude.
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이 특허에 인용된 특허 (17)
Schneider Arthur J. ; Small James G., Airborne GPS guidance system for defeating multiple jammers.
Diefes Debra L. (Alexandria VA) Fan Leopold C. (Potomac MD) Rodgers Charles E. (St. Leonard MD), Attitude determining system for use with global positioning system.
Diefes Debra L. (Alexandria VA) Fan Leopold C. (Potomac MD) Rodgers Charles E. (St. Leonard MD), Attitude determining system for use with global positioning system, and laser range finder.
Silverstein Seth David ; Ashe Jeffrey Michael ; Kautz Gregory Michael ; Wheeler Frederick Wilson ; Jacomb-Hood Anthony Wykeham, Method for determining orientation and attitude of a satellite- or aircraft-borne phased-array antenna.
Cohen,Clark E.; Brumley,Robert W.; Psiaki,Mark L.; Gutt,Gregory M.; Bencze,William J.; Ledvina,Brent M.; Ferrell,Barton G.; Whelan,David A., Methods and apparatus for a navigation system with reduced susceptibility to interference and jamming.
Keith D. McDonald, Signal structure and processing technique for providing highly precise position, velocity, time and attitude information with particular application to navigation satellite systems including GPS.
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