An Efficient GPS Receiver Algorithm for Channelwise Multipath Detection and Real-Time Positioning

Hyung Keun Lee, Gyu Lee, and Gyu-In Jee

Abstract:	In this paper, we propose an efficient GPS receiver algorithm under multipath environments. The proposed algorithm is composed of three parts, i.e., channelwise multipath detection, channelwise pseudorange compression filter, and multipath-tolerant positioning filter. The channelwise multipath detection is enabled by a unique test statistic that has a good resolution with respect to soft faults either in a pseudorange sequence or in a carrier-phase sequence can be detected channel by channel. The channelwise pseudorange compression filter produces an equivalent pseudorange where multiple successive pseudoranges and carrier-phases of a channel are efficiently combined. The multipath-tolerant positioning filter generates a reliable position estimate that combines the fusion outputs of the channelwise pseudorange compression filters and the decision outputs by the channelwise multipath test statistics.
Published in:	Proceedings of the 2002 National Technical Meeting of The Institute of Navigation January 28 - 30, 2002 The Catamaran Resort Hotel San Diego, CA
Pages:	265 - 276
Cite this article:	Lee, Hyung Keun, Lee, Gyu, Jee, Gyu-In, "An Efficient GPS Receiver Algorithm for Channelwise Multipath Detection and Real-Time Positioning," Proceedings of the 2002 National Technical Meeting of The Institute of Navigation, San Diego, CA, January 2002, pp. 265-276.
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