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Sensors 2018, 18(4), 1149; https://doi.org/10.3390/s18041149

Statistical Multipath Model Based on Experimental GNSS Data in Static Urban Canyon Environment

Shanghai Key Laboratory of Navigation and Location Based Service, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Received: 6 February 2018 / Revised: 26 March 2018 / Accepted: 4 April 2018 / Published: 10 April 2018
(This article belongs to the Section Remote Sensors)
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Abstract

A deep understanding of multipath characteristics is essential to design signal simulators and receivers in global navigation satellite system applications. As a new constellation is deployed and more applications occur in the urban environment, the statistical multipath models of navigation signal need further study. In this paper, we present statistical distribution models of multipath time delay, multipath power attenuation, and multipath fading frequency based on the experimental data in the urban canyon environment. The raw data of multipath characteristics are obtained by processing real navigation signal to study the statistical distribution. By fitting the statistical data, it shows that the probability distribution of time delay follows a gamma distribution which is related to the waiting time of Poisson distributed events. The fading frequency follows an exponential distribution, and the mean of multipath power attenuation decreases linearly with an increasing time delay. In addition, the detailed statistical characteristics for different elevations and orbits satellites is studied, and the parameters of each distribution are quite different. The research results give useful guidance for navigation simulator and receiver designers. View Full-Text
Keywords: global navigation satellite system; multipath; statistical model; urban canyon global navigation satellite system; multipath; statistical model; urban canyon
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Wang, Y.; Chen, X.; Liu, P. Statistical Multipath Model Based on Experimental GNSS Data in Static Urban Canyon Environment. Sensors 2018, 18, 1149.

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