A Method of Suppressing Multi-path Satellite Signals in Urban Canyon

Mei Qi; Everett. Wang; Li Shi-yu; Zhang Zhi-jin

doi:10.12052/gdutxb.170111

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A Method of Suppressing Multi-path Satellite Signals in Urban Canyon

更新时间：2026-05-27

- A Method of Suppressing Multi-path Satellite Signals in Urban Canyon
- Vol. 35, Issue 2, Pages: 81-85(2018)
- 作者机构：
  
  广东工业大学　信息工程学院,广东,广州,510006
- 作者简介：
- 基金信息：
- DOI：10.12052/gdutxb.170111
  CLC： TN967.1
- Online First：09 March 2018，
  
  Published：2018
- 稿件说明：
移动端阅览
梅琪, 王峰, 李诗语, 张智金. 一种抑制城市峡谷多径卫星信号的定位方法[J]. 广东工业大学学报, 2018, 35(2): 81-85.

Mei Qi, Everett. Wang, Li Shi-yu, et al. A Method of Suppressing Multi-path Satellite Signals in Urban Canyon[J]. 2018, 35(2): 81-85.
梅琪, 王峰, 李诗语, 张智金. 一种抑制城市峡谷多径卫星信号的定位方法[J]. 广东工业大学学报, 2018, 35(2): 81-85. DOI： 10.12052/gdutxb.170111.

Mei Qi, Everett. Wang, Li Shi-yu, et al. A Method of Suppressing Multi-path Satellite Signals in Urban Canyon[J]. 2018, 35(2): 81-85. DOI： 10.12052/gdutxb.170111.

摘要

针对车辆在城市峡谷环境下受建筑物遮挡而产生的多径效应导致定位精度降低的问题

提出了一种抑制城市峡谷多径卫星信号的定位方法. 本方法利用城市道路环境下

车辆前后和上方的卫星不容易被遮挡

而道路左右的卫星容易被高大建筑物遮挡这个事实

推算出不会被遮挡卫星的最低高度角相对于道路方向的方向角的关系

通过计算卫星的伪距残余来与门限值比较

动态调整方向角与高度角关系中的参数

来有效判断当前时刻的可见卫星和非视距卫星

并剔除非视距卫星

减弱多径效应的影响

从而实现城市峡谷环境下的车辆高精度定位. 通过理论分析、仿真验证和实际的测试结果表明

该方法有效地提高了车辆的定位精度.

Abstract

A novel method to suppress the multi-path satellite signals in urban canyons environment is presented. Based on the relationship between the azimuth angle and the elevation angle of the satellite in relation to the direction of the road

the method can effectively judge the current time by comparing the parameters of the azimuth angle and the elevation angle relationship by calculating the pseudorange residual of the satellite to compare with the threshold value satellite and non-line-of-sight satellites

and eliminate non-line-of-sight satellites

reducing the impact of multipath effect

in order to achieve the city canyon environment

high-precision positioning of vehicles. Through the theoretical analysis

simulation and practical test results show that this method can effectively improve the positioning accuracy of the vehicle.

关键词

Keywords

references

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