基于SSR信息的GPS实时精密单点定位性能分析

连续接收10 d CNES实时播发的以状态空间表示的数据流信息，数据流的完整性可达91.769%；结合卫星广播星历实时恢复精密卫星轨道与钟差得出，CNES播发的实时数据流轨道三维位置精度优于4.5 cm，钟差精度优于0.09 ns。用得到的卫星轨道和钟差对10个IGS测站10 d观测数据进行精密单点定位解算，得出基于SSR信息的RTPPP可以实现23 min收敛到10 cm精度的定位性能，单天解三维点位精度优于3 cm。

GPS Real-time Precise Point Positioning Performance Analysis Based on SSR Information

We continuously receive ten days of CNES real-time broadcast data stream information in the state space representation and analyze the integrity of real-time data stream up to 91.769%. Simultaneously, we analyze the accuracy of real-time precision satellite orbit and clock error, which we recover by broadcast ephemeris. The three-dimensional positional accuracy of real-time data stream broadcast by CNES is better than 4.5 cm, and the clock error accuracy is better than 0.09 ns. Then, using the recovered satellite orbits and the clock error, ten-day observation data of ten IGS stations are used to perform precise point positioning calculations. It is concluded that the RTPPP based on the SSR information can achieve 23 min convergence. With a positioning performance of 10 cm accuracy, the single-day solution 3D point accuracy is better than 3 cm.