Real-time precise BDS clock estimation with the undifferenced observation

被引：0
|
作者：
Zhao Q. [1 ]
Dai Z. [1 ,2 ]
Wang G. [1 ]
Li X. [1 ]
Liu J. [1 ]
机构：
[1] GNSS Research Center, Wuhan University, Wuhan
[2] School of Geodesy and Geomatics, Wuhan University, Wuhan
来源：
Dai, Zhiqiang (dzq@whu.edu.cn) | 2016年 / Editorial Board of Medical Journal of Wuhan University卷 / 41期
基金：
中国国家自然科学基金;
关键词：
BDS; GNSS; Precise clock correction; Real-time; Square-root information filter; Undifferenced;
D O I：
10.13203/j.whugis20150314
中图分类号：
学科分类号：
摘要：
We studied and implemented an algorithm for real-time precise satellite clock estimation based on the undifferenced code and phase observations. The BDS and GPS observations of 53 MGEX global sites were collected to generate the real-time clock that was compared with the final WHU 30 s precise clock product. The accuracy of our real-time GPS clock was better than 0.06 ns, comparable to that of the IGS final clock products, which verifies the processing accuracy of our software. The accuracy of the real-time BDS clock was 0.1-0.15 ns, a little worse than that of GPS satellites. A kinematic PPP test showed that, the horizontal accuracy of BDS solution was about 0.041m, comparable to 0.058 m of GPS solution, while the vertical accuracy is 0.069 m, a slightly worse than 0.037 m of GPS. The kinematic PPP solution based on the real-time clock correction was consistent with the solution based on the final clock products, which verifies the real-time clock products. © 2016, Wuhan University All right reserved.
引用
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页码：686 / 691
页数：5
相关论文
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