摘要
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.
出处
《武汉大学学报(信息科学版)》
EI
CSCD
北大核心
2014年第5期566-570,共5页
Geomatics and Information Science of Wuhan University
基金
国家863计划资助项目(2012AA12A209)
国家自然科学基金资助项目(41074022)
国土环境与灾害监测国家测绘地理信息局重点实验室开放基金资助项目(LEDM2011B06)~~
关键词
CORS
组网
坐标基准
系统偏差
CORS
networking
coordinate datum
systematic deviation