GPS网平面坐标转换的精度评定

ACCURACY EVALUATION OF THE PLANE COORDINATE TRANSFORMATION OF GPS NETWORK

建立了GPS网和地面网在高斯平面直角坐标系下的坐标转换模型及转换后GPS网精度的评价指标。通过实例分析，认为在进行GPS坐标转换时，应在测区周围或中部布设一定数量的稳定的公共点，才能保证转换后GPS网的精度及精度的均匀性。

This paper establishes the coordinate transformation model of GPS network and terrain network in Gauss plane rectangular coordinate system, and gives the accuracy evaluation indexes of the transformed GPS network. By analyzing an example, it is considered that, when transforming the GPS coordinates, in order to ensure the accuracy and its evenness of transformed GPS network, a certain amount of stable common points should be laid out around or in the central part of the surveyed area.