摘要
提出了综合利用不同时期的GPS数据解算三维坐标转换参数的一种方法 ,并结合上海地区 1999年和 2 0 0 2年施测的两个GPS控制网数据 ,验证了给出的模型和方法。结果表明 。
This paper puts forward a method for calculating three-dimensional coordinate transformation parameters with the integrated GPS data observed in different periods. The main idea is that the transformation parameters denote the relationship between two coordinate systems. If the datum points of two coordinate systems keep unchanged and the coordinates of the GPS control points in two systems are observed from the corresponding datum points almost at the same time, the calculated transformation parameters also keep unchanged even the coordinates of these control points may change at different time if they are not stable. In the sedimentary land as Shanghai, the heights change much more quickly than plane coordinates due to the subsidence of land surface. Because the control points with plane coordinates and the bench marks with normal height are normally set in different points in urban control net, this paper derives the corresponding model to separate the plane coordinate and height in the transformation model.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2003年第6期728-731,共4页
Geomatics and Information Science of Wuhan University
基金
上海市教育发展基金资助项目 ( 0 1JG0 5 0 3 48)
教育部留学回归人员基金资助项目
关键词
GPS
坐标基准
转换模型
转换参数
GPS
datum transformation
three-dimensional transformation model
