GNSS接收机环路跟踪算法设计及验证  

An Algorithm Design of Tracking-loop in RNSS Receiver

作　　者：刘建[1,2] 黎雨露[1] 贺智轶[1] 谢涛[1] 

机构地区：[1]武汉理工大学信息工程学院,武汉430070 [2]中国交通通信中心,北京100011

出　　处：《武汉理工大学学报》2009年第11期122-125,共4页Journal of Wuhan University of Technology

基　　金：国家高技术研究发展计划863项目(2007AA12Z170)

摘　　要：GNSS信号的跟踪需要2个跟踪环路,一个用来跟踪载波频率的载波跟踪环,另一个是跟踪码的码跟踪环。详细介绍了2个跟踪环路的联合算法,并利用Matlab在一组实测的GPS数据下完成该跟踪算法仿真及验证。试验证明,使用该算法运算量小,可以快速稳定的完成信号的跟踪,环路具有较好的动态性能和抗噪性能,有效地提高了接收机的性能。To track a GNSS signal two tracking loops are required. One loop is used to track the carrier frequency and is referred to as the carrier loop. The other one is used to track the code and is referred to as the code loop. In this paper, the combined arithmetic of two tracking loops is described in detail. The validity of the arithmetic is tested and verified by MATLAB in using a raw GPS signal. The result shows the arithmetic could save the calculation and the tracking time. For its good dynamic and anti-noise performance, the performance of the receiver is effectively improved.

关 键 词：RNSS 码跟踪环路 载波跟踪环路 

分 类 号：TN967.1[电子电信—信号与信息处理]