摘要
从GNSS软件接收机的基本原理出发,阐述了GNSS软件接收机的基本组成及优点,重点介绍了信号处理模块中的捕获策略、跟踪方案以及误差模型的实现方法。为了测试核心模块设计的正确性与有效性,进行了真实采集信号捕获与跟踪结果的验证以及定位精度测试。结果表明,接收机的信号捕获策略、跟踪方案以及导航解算算法正确,可实现单点静态定位,且在GDOP值小于4的情况下定位精度优于10 m,具有良好的灵活性和可扩展性。
The essential component and the characteristic of GNSS software receiver were described according the principle of GNSS software receiver. The key modules, which include the signal processing module, the signal acquiring and tracking module, and the navigation ephemeris resolution module, were introduced emphatically. In order to test the effectiveness of these modules, actual collection results of signal acquisition, tracking and positioning precision were performed. The results demonstrate that the proposed algorithms of signal acquiring, tracking, and navigation resolution can be carried out correctly and conveniently, and the single point static positioning can be realized. The result precision can reach 10 m when GDOP value is less than 4.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2009年第5期577-580,共4页
Geomatics and Information Science of Wuhan University
基金
国家863计划资助项目(2009AA12Z325)
国家自然科学基金资助项目(160602046)
