昆明CORS系统精度测试分析与研究

Precision test analysis and research of Kunming CORS system

采用野外实地检测的方式对升级后的昆明市卫星定位综合服务系统(昆明CORS)进行实时动态定位精度测试。首先在昆明CORS覆盖范围内选取了22个均匀分布的测试点,然后利用昆明CORS系统对测试点进行网络RTK观测,统计各测试点的坐标分量差值和内、外符合精度,最后分析昆明CORS系统不同星座组合和不同时间段的精度情况,对升级后的昆明CORS进行评价并对今后昆明CORS建设提出建议。

The real-time dynamic positioning accuracy of the upgraded Kunming continuously operating reference stations(Kunming CORS)is tested by field detection.Twenty-two uniform distribution test points are selected in the coverage area of Kunming CORS.The network RTK observation of the test points is carried out by Kunming CORS system.The coordinate component difference and internal and external coincidence accuracy of each test point are counted.The accuracy of different constellation combinations and different time periods of Kunming CORS system are analyzed.The upgraded Kunming CORS is evaluated and suggestions for the construction of Kunming CORS in the future are put forward.