摘要
为了实现山东省级区域大地坐标参考框架动态维持,通过SDCORS速度场模型改正板块运行,在此基础上通过ITRF框架间Helmert转换的方法转换到CGCS2000,试验证明山东区域的坐标参考框架维持精度优于2cm,考虑到SDCORS高精度服务精度指标需要每年更新坐标。
In order to maintain of Shandong regional terrestrial coordinate frame based on SDCORS,the coordinate transformation model with space and time should be established.An algorithm of ITRF framework transformation is introduced and high-precision velocity model of Shandong Province is established which is about 3 cm per year;The Shandong regional terrestrial reference frame is maintained by velocity model and ITRF transformation parameters,the accuracy is better than 2 cm.So the coordinates of SDCORS need to be updated every year in view of the Accuracy of SDCORS Service.
作者
张海平
徐彦田
赵硕
ZHANG Haiping;XU Yantian;ZHAO Shuo(Shandong Provincial Institute of Land Surveying and Mapping,Jinan 250102,China;Chinese Academy of Surveying&Mapping,Beijing 100830,China)
出处
《导航定位学报》
CSCD
2019年第3期131-134,共4页
Journal of Navigation and Positioning
基金
中国测绘科学研究院基本科研业务费(AR1903)
