一种消除多径对Galileo系统跟踪影响的新方法  

A new method of multipath mitigation based on Galileo receiver tracking

作　　者：田增山[1] 张立芬[1] 何维[1] 朝磊[1] 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《重庆邮电大学学报（自然科学版）》2009年第6期731-735,共5页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：教育部科学技术研究重点项目(207097);重庆市科委科技攻关项目(CSTC;2008AC2073)

摘　　要：为了消除多径对Galileo系统的影响,提高定位精度,介绍了一种抑制多径影响的新方法——高分辨率跟踪技术,并将其应用在多径跟踪抑制方面。主要通过介绍Galileo系统的BOC(binary offset carrier)信号、多径对BOC信号相关特性的影响以及多径对Galileo跟踪性能的影响,给出用高分辨率技术来进行多径抑制的方法。仿真结果显示,高分辨率跟踪技术对多径有很好的抑制能力。In order to mitigate the muhipath＇ s influence on Galileo system and enhance the positioning precision, a high resolution correlator code tracking technique was applied to mitigate the muhipathg influence. This paper analyzes the BOC signal in Galileo system, the multipath impact of the correlation performance of BOC signal and its impact on the performance of Galileo tracking, and gives the high resolution correlator code tracking technique to mitigate muhipath. The simulation results indicate that the influence of the muhipath is mostly mitigated by the high resolution correlator code tracking technique.

关 键 词：伽利略 多径消除 高分辨率相关技术 信号相关 跟踪 

分 类 号：TN967[电子电信—信号与信息处理]