摘要
采用历元间、星间差分技术,估计了基于参考历元的相对钟差。以不同局域GNSS网络、不同观测间隔连续三天的观测数据进行了参数估计,研究了不同区域、采样间隔对估计结果精度的影响。与IGS最终精密钟差相比,估计得到的相对钟差的历元间差优于0.2 ns,基于参考历元的相对钟差的精度优于0.9 ns。不同区域的估计结果精度大致相当;采样间隔对估计结果的影响很小。
The reference epoch based relative clock was estimated using the method of epoch-difference and satellite-difference.An experiment is carried out using the data of different sampling rates collected from Hong Kong and Shanghai GNSS reference networks,in order to study the influences of region and sampling rates to the accuracy.The results show that the difference between our results and IGS final precise clock error products is less than 0.2 ns,and the accuracy of the reference epoch based relative clock is less than 0.9 ns.The accuracy is at the same level in different regions,and the influence of sampling rate is very small.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2010年第8期1001-1003,1007,共4页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目(40974018)
关键词
精密钟差
历元间差分
精密单点定位
采样率
precise clock
epoch-difference
precise point positioning
sampling rate
