GNSS精密单点定位算法研究

Research on GNSS precise point positioning algorithm

介绍了精密单点定位模型、精密单点随机模型及抗差Kalman滤波模型3种计算模型,采用实测数据对抗差算法的有效性进行了验证和分析,得出采用迭代算法克服残差相关性的影响,可以大大减弱粗差对定位结果的影响,抗差Kalman滤波得到的定位结果与无粗差条件下解算的定位结果之间的差值可忽略不计。

The article introduces Function Model of PPP, Stochastic Model of PPP and Robust Kalman filtering models, and verifies and analyzes the effectiveness of the robust algorithm by using measured data, and concluds that the iterative algorithm can overcome the residual. The influence of correlation can greatly reduce the influence of gross error on the positioning result. The difference between the positioning result obtained by the anti-difference Kalman filtering and the positioning result solves without the gross error condition is negligible.