摘要
提出一种高精度的钟差加密方法。采用历元间差分载波相位观测值,得到高精度历元间相对卫星钟差,并应用这一相对钟差产品对IGS 5min钟差进行加密,获得30s采样的"高频度"钟差。与数学插值算法相比,该加密算法有一定的优越性,加密误差在0.03ns以内,且不同稳定度的星载钟差异较小。
In this paper,an epoch-difference GNSS clock densification algorithm is tested.The high precision relative satellite clock bias is obtained by epoch-difference carrier phase observation.By using relative clock results,the high-rate 30 ssatellite clock products are then densified from IGS 5 min interval precise satellite clock products.The results show that compared with mathematical interpolation methods,the epoch-difference clock densification algorithm has better performance.The densification precision using the epoch differential model is below 0.03 ns.Furthermore,the differential among different types of satellite clock is small.
出处
《大地测量与地球动力学》
CSCD
北大核心
2016年第5期415-418,共4页
Journal of Geodesy and Geodynamics
关键词
钟差加密
历元间差分模型
插值
精密单点定位
clock densification
interpolation
epoch-difference model
precise point positioning（PPP）
