基于系统间交叉验证的海上精密单点定位质量检核方法

基于MGEX(multi-GNSS experiment)测站实测数据，采用系统间交叉验证方法检核海上BDS/GNSS精密单点定位质量。分析不同系统组合的精密单点定位精度和收敛速度，结果表明，相对于单BDS，不同系统组合可有效提高精密单点定位的收敛速度和定位精度；组合系统的数目越多，相应的精密单点定位精度越高，收敛速度越快。同时，在静态、仿动态、海上动态不同定位模式下，采用系统间交叉验证方法检核精密单点定位的精度和可靠性。

Quality Check Method for Marine Precise Point Positioning Based on Cross Validation between Systems

Based on the measured data of MGEX stations, we use the cross validation method between systems to check the quality of Beidou/GNSS precise point positioning (PPP). We analyze the accuracy and convergence speed performance of multi-GNSS PPP with different combinations. The results show that compared with single BDS, multi-GNSS can accelerate the convergence speed as well as the accuracy of PPP. The greater the system combinations number, the higher the positioning accuracy and the faster the convergence speed of PPP. Then, we use the cross validation method between systems to check the accuracy and reliability of PPP results in static, pseudo-dynamic and marine dynamic positioning modes.