Design and Performance Evaluation of Model-Based Multipath Estimation Technique for GPS Receivers

D.W. Lim, M.B. Heo, H.H. Choi, S.J. Lee

Abstract:	Multipath reception remains a dominant source of ranging errors in Global Navigation Satellite Systems (GNSS). This phenomenon is generally considered undesirable in the context of GNSS, as multipath reception can significantly distort the shape of the correlation function. In this study, a model distortion of a correlation function is formulated, and a model-based multipath estimation (MBME) technique for GPS L1/L5 receivers is proposed in order to estimate parameters of multipath signals, such as amplitude and delay. The proposed MBME technique does not require any hardware modifications, and it can estimate parameters for both short- and long-delay multipath reception. This technique would prove to be very effective for short-delay multipath estimation, particularly where an L5 signal is available. Finally, we describe the results of a simulation to confirm the feasibility of the proposed technique.
Published in:	Proceedings of the ION 2013 Pacific PNT Meeting April 23 - 25, 2013 Marriott Waikiki Beach Resort & Spa Honolulu, Hawaii
Pages:	651 - 660
Cite this article:	Lim, D.W., Heo, M.B., Choi, H.H., Lee, S.J., "Design and Performance Evaluation of Model-Based Multipath Estimation Technique for GPS Receivers," Proceedings of the ION 2013 Pacific PNT Meeting, Honolulu, Hawaii, April 2013, pp. 651-660.
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