Attitude determining system for use with global positioning system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04B-007/185
G01S-005/02
출원번호
US-0077734
(1993-06-18)
발명자
/ 주소
Diefes Debra L. (Alexandria VA) Fan Leopold C. (Potomac MD) Rodgers Charles E. (St. Leonard MD)
출원인 / 주소
Adroit Systems, Inc. (Alexandria VA 02)
인용정보
피인용 횟수 :
86인용 특허 :
0
초록▼
An attitude determining system based upon the global positioning system is disclosed, and is adapted to provide dynamic, real time three-dimensional attitude, position, and time information on any vehicle in which it is located. The system is adapted to work at high latitudes, and be immune to magne
An attitude determining system based upon the global positioning system is disclosed, and is adapted to provide dynamic, real time three-dimensional attitude, position, and time information on any vehicle in which it is located. The system is adapted to work at high latitudes, and be immune to magnetic deviations. The attitude determining system makes use of certain hardware configurations and mathematical algorithms to overcome the limitations of the prior art, and eliminate errors related to the motion of the vehicle platform.
대표청구항▼
A system employing telemetry and other electronic signals provided by a series of orbiting satellites to provide a real-time solution of direction of travel; and attitude, which is comprised of heading, pitch, and roll, of a platform on which said system is located, said system comprising: antenna a
A system employing telemetry and other electronic signals provided by a series of orbiting satellites to provide a real-time solution of direction of travel; and attitude, which is comprised of heading, pitch, and roll, of a platform on which said system is located, said system comprising: antenna array means comprising at least two discrete antennae, each antenna forming at least one baseline with another of said antenna, said antenna array adapted to collect said telemetry and electronic signals transmitted by the series of orbiting satellites, wherein said discrete antennae are spaced such that the length of at least one of said baselines is less than the carrier wavelength being received from said orbiting satellites; receiver means electrically communicating with each said discrete antenna, and adapted to interpret telemetry and electronic signals collected by said antenna array means; mathematical algorithmic comparing means adapted to comparing information received from each said receiver means, to calculate heading, pitch, and roll and to reduce errors inherent in said received telemetry and electronic signals, wherein said algorithmic comparing means further includes a coarse attitude determining means for determining a first, general attitude, with accuracy between about +/-30°, and a fine attitude determining means for improving the accuracy of said first determination to within about +/-0.5°, which occurs within the same solution time-frame, said algorithmic comparing means further including a satellite selecting regime for selecting one or more preferred satellites from among said series of orbiting satellites, and wherein said attitude is determined by carrier phase interferometry; and microprocessor means for processing said information with said algorithm to accurately determine the attitude, heading, pitch, and roll of the platform.
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이 특허를 인용한 특허 (86)
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Whitehead, Michael L.; Miller, Steven R.; McClure, John A.; Davis, Cary; Feller, Walter J., Method and system using GNSS phase measurements for relative positioning.
Moser,Michael; Dietrich,Arne, Method for improving GPS integrity and detecting multipath interference using inertial navigation sensors and a network of mobile receivers.
Nadkarni, Vivek Bhalchandra; Smith, Scott R., Method for substituting at least one high quality position measurement taken before an interrupting event with a set of upgraded low quality position measurements provided by the same source of measurements after the interrupting event.
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