Practical GPS Carrier Phase Multipath Mitigation Using High Resolution Correlator Techniques

Gary A. McGraw

Abstract:	Carrier phase multipath is a major source of error for precision GPS applications such as surveying, attitude determination, and targeting systems. In this paper a carrier phase multipath mitigation technique called the “High Resolution Correlator” (HRC) is described. The HRC utilizes multiple correlators found in existing receiver hardware designs to obtain significant reduction in carrier phase multipath errors. A method of integrating the HRC in conjunction with standard phase detectors is described that substantially eliminates the severe noise penalty associated with the basic HRC implementation. The paper provides detailed theoretical analysis and simulation of the multipath and noise errors of the C/Acode HRC, along with laboratory test results.
Published in:	Proceedings of the IAIN World Congress and the 56th Annual Meeting of The Institute of Navigation (2000) June 26 - 28, 2000 The Catamaran Resort Hotel San Diego, CA
Pages:	373 - 381
Cite this article:	McGraw, Gary A., "Practical GPS Carrier Phase Multipath Mitigation Using High Resolution Correlator Techniques," Proceedings of the IAIN World Congress and the 56th Annual Meeting of The Institute of Navigation (2000), San Diego, CA, June 2000, pp. 373-381.
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