Impact of Pseudorandom Noise Codes on Multipath Mitigation

Andrey Veitsel, Mark Zhodzishsky, Michael Vorobiev and Danila Milyutin

Abstract:	Multipath mitigation in GPS receiver may be based on the structure of correlators of pseudorandom sequence. Their development depends on the mathematical model of pseudorandom sequence. Two different mathematical pseudonoise code models have been given in the paper. The analysis of Gold codes that are used in satellite navigation has shown that some PRN can be described only with one of the mathematical models. These mathematical models used in computer aided design package (CAD-package) for designing a GPS-GLONASS receiver. The developed package permits to compute statistical characteristics of correlation signals I, Q, dI, dQ, noise and multipath measurement errors, interpath and interchannel biases, biases due to technological scatter of analog path elements. It has been shown that multipath suppression depends on GPS satellite PRN, which means that multipath suppression varies with Gold codes at the same multipath suppression technology. Such a conclusion has been confirmed by experimental results obtained with Spirent GPS simulator GSS7700
Published in:	Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005) September 13 - 16, 2005 Long Beach Convention Center Long Beach, CA
Pages:	2119 - 2123
Cite this article:	Veitsel, Andrey, Zhodzishsky, Mark, Vorobiev, Michael, Milyutin, Danila, "Impact of Pseudorandom Noise Codes on Multipath Mitigation," Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005), Long Beach, CA, September 2005, pp. 2119-2123.
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