GNSS数据质量评估软件的实现及验证分析  

Implementation and Verification Analysis of the Software of GNSS Data Quality Check

作　　者：吴丹[1,2] 王利[1,2] 张勤[1,2] 付文举[1,2] 舒宝 范丽红[1,2] 

机构地区：[1]长安大学地质工程与测绘学院,陕西西安710054 [2]西部矿产资源与地质工程教育部重点实验室,陕西西安710054 [3]武汉大学卫星导航定位技术研究中心,湖北武汉430079

出　　处：《测绘科学技术学报》2015年第4期344-348,共5页Journal of Geomatics Science and Technology

基　　金：国家自然科学基金项目(41274005);中央高校基本科研业务费专项资金项目(2013G2263003;2013G3264003)

摘　　要：近些年卫星导航系统的飞速发展,使得导航定位用户获取多模GNSS数据已成为一种趋势。而目前尚无一种能够同时检测GPS/BDS/GLONASS/Galileo数据质量的软件。针对新一代RINEX格式的GNSS数据,深入研究数据质量检测的方法。用C语言开发了与TEQC数据质量检测功能相近的软件QC,并对其正确性进行了验证。在此基础上,对iGMAS站的数据质量进行了分析,发现目前的多模GNSS接收机易发生钟跳;在多路径效应方面,BDS卫星的GEO卫星多路径效应的周期性较弱,信噪比也呈现出与GPS和GLONASS不同的特征。With the development of global navigation satellite system, it is a trend to receive satellite siginals from muti-systems for one receiver. At the moment there is no quality check software that can simultaneously process the data from GPS/BDS/GLONASS/Galileo. According to this, we developed a software that is similar to TEQC, by which the latest version of GNSS data can be processed. The reliability of this program was also verified by the data of iGMAS. At the meanwhile, the quality of iGMAS data was also analysed. The result shows that clock jump ap- pears for some receivers of iGMAS, the muhipath periods for BDS GEO is not obvious compared to MEO, what is more, the SNR of BDS is also different from GPS and GLONASS.

关 键 词：全球导航卫星系统 质量评估 钟跳 多路径 信噪比 

分 类 号：P228[天文地球—大地测量学与测量工程]