区域CORS组网中的坐标基准统一方法

Coordinate Datum Unification for Regional CORS Network Combination

针对区域连续运行参考站网(continuously operating reference systems,CORS)组网中不同CORS坐标基准不一致的问题,分析了产生原因,给出了基准统一方法,并利用湖北、湖南两省CORS数据进行了实例分析。两省CORS坐标基准之间存在17.9±4.5mm的系统偏差,利用本文方法统一了两省CORS坐标基准,消除了系统偏差,实现了基准衔接。最后,针对区域CORS组网基准统一给出了若干建议。

In order to prevent the gaps in coordinate datum between different regional continuously op-erating reference systems （CORS）, we analyze the causes and introduce a method for coordinate da-tum unification. Using experimental data from the Hubei and Hunan CORS,the results show that the systematic deviation reaches 17.9±4.5 mm between these two datums. The proposed method establi-shes a unified coordinate datum to eliminate the systematic deviation and builds connections between each coordinate datum. The validity of our method was supported by empirical evidence. Finally, some suggestions about coordinate datum unification for a regional CORS network combination are put forward.