doi:10.16186/j.cnki.1673-9787.2020090077

Received:2020/09/18

Revised:2020/11/01

Published:2022/07/15

Strategy for BDS multipath mitigation based on wavelet decomposition and sidereal filter

YANG Wei1, ZHANG Qiuzhao1, MA Xiaodong2

1.School of Envirowment and Spatial Informatics，China University of Mining and Technology， Xuzhou 221116， Jiangsu， China;2.China Railway Bridge Survey and Design Institute Group Co.， Ltd.，Wuhan  430051，Hubei，China

Abstract: According to the characteristics of BDS constellation and multipath , a multipath mitigation method based on sidereal filter and wavelet decomposition was proposed. Based on reconstruction of single difference residuals and wavelet decomposition,multipath error was extracted from observation domain of both phase and code single difference residuals that were reconstructed. The multipath error was corrected on each BDS satellite respectively and then the baseline was calculated by single frequency single epoch LAMBDA algorithm.Finally, experimental result showed that this method could effectively reduce multipath errors and accuracies were increased by 40.1%,43.5%,and 37.9% respectively in E,N and U directions.

Key words:BDS;multipath error;sidereal filtering;single difference residual;wavelet decomposition

基于小波分解与恒星日滤波的BDS多路径削减方法_杨威.pdf