Indoor multipath propagation characteristics of BeiDou pseudolite signal

doi:10.13474/j.cnki.11-2246.2019.0173

测绘通报 ›› 2019, Vol. 0 ›› Issue (6): 1-4,10.doi: 10.13474/j.cnki.11-2246.2019.0173

Indoor multipath propagation characteristics of BeiDou pseudolite signal

WANG Xinyi¹, PAN Shuguo¹, YU Baoguo², WANG Yanheng¹, GAN Xingli²

1. School of Instrument Science and Engineering, Southeast University, Nanjing 210096, China;
2. The 54 th Research Institute of CETC, Shijiazhuang 050081, China

Received:2018-10-31 Revised:2019-01-22 Online:2019-06-25 Published:2019-07-01

Abstract

Abstract:

BeiDou pseudolite system can be applied to indoor location service because of its strong anti-interference ability and flexible networking capabilities. Multipath effect is the main factor affecting the accuracy of pseudolite positioning. Therefore, mastering the indoor multipath propagation characteristics of BeiDou pseudolite is the premise of suppressing multipath and improving positioning accuracy. In this paper, based on the unique signal system of BeiDou pseudolite, the multipath characteristic parameters such as path loss and power angle distribution of pseudolite signals in indoor environment are studied by ray tracing method. The three-dimensional model of large-scale shopping mall is constructed by Wireless Insite software. The simulation results show that the pseudolite multipath components will decrease sharply under non-line-of-sight conditions and will be distributed in a certain range of horizontal direction angles with similar power values, while the fading channel model obeys the small-scale fading in accordance with the Rayleigh-lognormal distribution, and the large-scale fading coincides with the log-distance path loss model.

Key words: BeiDou pseudolite, multipath effect, propagation characteristics

CLC Number:

P228

WANG Xinyi, PAN Shuguo, YU Baoguo, WANG Yanheng, GAN Xingli. Indoor multipath propagation characteristics of BeiDou pseudolite signal[J]. 测绘通报, 2019, 0(6): 1-4,10.

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Indoor multipath propagation characteristics of BeiDou pseudolite signal

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