NLOS and Multipath Detection using Doppler Shift Measurements

Liangchun Xu and Jason Rife

Abstract:	This paper proposes a novel multipath detector based on Doppler shift measurements extracted from a frequency-locked loop (FLL). The method is presented in the context of recent analysis about FLL performance, which suggests the Doppler measurement exhibits high sensitivity to multipath in urban environments. A field experiment is conducted as a proof-of-concept for the proposed multipath detector. Our pilot study suggests the multipath detector may be effective enough to detect detrimental multipath, on its own in many cases or as a complement to existing multipath detection methods for high-reliability applications.
Published in:	Proceedings of the 32nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2019) September 16 - 20, 2019 Hyatt Regency Miami Miami, Florida
Pages:	4064 - 4075
Cite this article:	Xu, Liangchun, Rife, Jason, "NLOS and Multipath Detection using Doppler Shift Measurements," Proceedings of the 32nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2019), Miami, Florida, September 2019, pp. 4064-4075. https://doi.org/10.33012/2019.17115
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