北京航空航天大学学报 ›› 2009, Vol. 35 ›› Issue (5): 551-554.

• 论文 • 上一篇    下一篇

GPS多径信号建模及接收机测试评估

杨 伟, 赵 昀, 寇艳红, 黄智刚   

  1. 北京航空航天大学 电子信息工程学院, 北京 100191
  • 收稿日期:2008-08-10 出版日期:2009-05-31 发布日期:2010-09-16
  • 作者简介:杨 伟(1982-),男,江苏徐州人,硕士生,shwy8237@sina.com.
  • 基金资助:

    国家863计划资助项目(2007AA12Z302)

Modeling of GPS multi-path signals and receiver testing

Yang Wei, Zhao Yun, Kou Yanhong, Huang Zhigang   

  1. School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2008-08-10 Online:2009-05-31 Published:2010-09-16

摘要: 多径信号误差是GPS(Global Positioning System)及其它卫星导航系统的重要误差源之一,有关多径建模与多径消除技术一直是卫星导航领域的研究热点.根据多径信号特性,推导了对GPS定位精度影响最大的镜面反射多径信号模型.基于这一多径模型,利用GPS软件接收机测试了多径对接收机伪距测量精度的影响.测试结果验证了所建立的多径模型的有效性,所获得的多径误差曲线为窄相关多径抑制技术提供了实验支持.

Abstract: The multi-path effect is one of the most important sources of positioning errors for global positioning system (GPS) and other satellite navigational systems. Multi-path signal modeling and its mitigation techniques have always been hot spots in the satellite navigation research direction. According to the multi-path signals nature, a specular reflection multi-path model was proposed, due to the influence of the specular reflections on GPS positioning accuracy more noticeable in comparison with other multi-path reflections. The pseudo-range measurement error of the GPS software receiver caused by the multi-path signals was tested. In the test, the multi-path signals were generated by this specular reflection model. The test results show that the pseudo-range error changes caused by the multi-path signals act in accord with the theoretical analysis curves.

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