A PRACTICAL METHOD FOR SYNCHRONOUS TRANSFORMATION OF GPS COORDINATE AND HEIGHT
Zhang Xingfu 1) ; and Shen Yunzhong 2)
1)Department of Surveying and Mapping, Guangdong University of Technology, Guangzhou 5100062)Department of Surveying and Geomatics, Tongji University, Shanghai 200092
Abstract：The synchronous transformation method of GPS coordinate and height based on GPS control network threedimension constraint adjustment theory is given out.The steps of the method are as follows.At first, the baseline vector between two points is calculated from the threedimension rectangular coordinate of GPS points, and the rotation parameters, scale parameter and the coordinate parameters in state coordinate system are also regarded as the unknown parameters, the coordinate and height transformation of GPS points are completed through the common points constraint. Finally,a case of GPS control network is used to test the method. The results show that the method is flexible, effective, and the transformation accuracy of coordinate and height are also well.
