GNSS异步RTK定位效果分析  

GNSS Asynchronous RTK Positioning Effect Analysis

作　　者：谢宝飞 刘晖[1] 舒宝 杨志鑫 王一飞 XIE Baofei;LIU Hui;SHU Bao;YANG Zhixin;WANG Yifei(GNSS Research Center,Wuhan University,Wuhan 430079,China)

机构地区：[1]武汉大学卫星导航定位技术研究中心,湖北武汉430079

出　　处：《测绘地理信息》2020年第5期24-28,42,共6页Journal of Geomatics

基　　金：武汉市应用基础前沿专项(2018010401011271)。

摘　　要：分析了GNSS(global navigation satellite system)卫星钟差在通信延迟内变化的量级,同时对比分析了不同系统异步RTK(real-time kinematic)定位精度。实验结果表明,与传统RTK模型相比,在考虑通信延迟内钟差变化的影响时,BDS/Galileo/GPS的RTK定位精度明显提高,GLONASS在通信延迟较低时无明显变化。其中,对于同样的通信延迟,BDS/Galileo的异步RTK定位精度明显优于GPS/GLONASS。This paper analyzes the magnitude of GNSS satellite clock error variation in communication delay, and compares and analyzes the asynchronous RTK(real-time kinematic) positioning accuracy of different systems. Experimental results show that compared with the traditional RTK model, the RTK positioning accuracy of BDS/Galileo/GPS is significantly improved when considering the influence of clock error, but there is no significant change in GLONASS. In addition, for the same communication delay, the asynchronous RTK positioning accuracy of BDS/Galileo is significantly better than that of GPS/GLONASS.

关 键 词：异步差分 同步差分 RTK(real-time kinematic) 卫星钟差 通信延迟 GNSS(global navigation satellite system) 

分 类 号：P207[天文地球—测绘科学与技术]