BDS/GPS双系统PPP精度分析

Accuracy Assessment of the BDS and GPS PPP

为评估精密单点定位的精度,本文基于GPS单系统和BDS/GPS双系统观测数据,采用非差非组合方法对比分析精密单点定位精度,实验结果表明,不同方向上BDS/GPS双系统的定位精度较GPS单系统精度提升最高达80%,定位收敛时间最大提升75%。本文结果证明BDS/GPS双系统具有优于单系统的空间结构,改善了定位结果的可靠性和稳定性,能够有效提高定位精度。

In order to evaluate the precision of precise point positioning, we use the un-difference and un-combined method to compare and analyze the precision of precise single-point positioning based on the observation data of GPS single system and BDS/GPS dual system. The experimental results show that the positioning accuracy of BDS/GPS dual system in different directions is up to 80% higher than that of GPS single system, and the positioning convergence time is up to 75% higher than that of single system. The results show that BDS/GPS dual system has better spatial structure than single system, which improves the reliability and stability of positioning results, and can effectively improve the positioning accuracy.