High Accuracy GPS and Antijam Protection using a P(Y) Code Digital Beamsteering Receiver

Alison Brown

Abstract:	NAVSYS High Gain Advanced GPS Receiver (HAGR) uses a digital beam-steering antenna array to provide additional gain in the direction of the GPS satellite signals. This increases the received signal/noise ratio on the satellites tracked and also improves the accuracy of the pseudo-range and carrier-phase observations. The directivity of the digital beams created from the antenna array also reduces the effect of multipath signals and GPS jamming and interference. This paper describes the operation of the HAGR digital beam steering array and includes test data demonstrating the high accuracy observation that it produces, Test results showing the benefits of the digital spatial processing in reducing multipath errors and GPS jamming are also included.
Published in:	Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001) September 11 - 14, 2001 Salt Palace Convention Center Salt Lake City, UT
Pages:	1245 - 1254
Cite this article:	Brown, Alison, "High Accuracy GPS and Antijam Protection using a P(Y) Code Digital Beamsteering Receiver," Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001), Salt Lake City, UT, September 2001, pp. 1245-1254.
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