Integration of INS with Multiple GPS Antennas for Airborne Applications

Huangqi Sun

Abstract:	Integration of differential GPS with an INS can provide high accuracy airborne position, velocity and attitude information. Accuracy may be jeopardized, however, when the GPS antenna is shaded during maneuvers. A way to overcome this problem is to integrate multiple GPS receiver data with the INS. This paper discusses the advantages of a multi- GPS/INS system which can bridge outages when the number of satellites is fewer than three at any one antenna. This concept is further expanded by using one pair of satellites (i.e. one double difference carrier phase) from each of three antennas. The result from a flight test, using two antennas on the fuselage and two on the wing tips, is used to validate the methodology. Results confirm that this strategy is effective for improving the overall satellite availability, hence accuracy and reliability.
Published in:	Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994) September 20 - 23, 1994 Salt Palace Convention Center Salt Lake City, UT
Pages:	1401 - 1409
Cite this article:	Sun, Huangqi, "Integration of INS with Multiple GPS Antennas for Airborne Applications," Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994), Salt Lake City, UT, September 1994, pp. 1401-1409.
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