基于EGM2008的CORS三维坐标转换

摘要

This paper introduces CORS system and EGM2008 global gravity model. And it sets high grade control points in the river reach of Chongqing main city area, makes 3D coordi-nate conversion and test of CORS based on EGM2008 global gravity model. It confirms the high precision and reliable of 3D coordinates based on CORS EGM2008 global gravity mo-del, real y realizes the GPS real time three dimensional meas-urement with high precision, which has a certain reference va-lue.%本文介绍了CORS 系统及EGM2008全球重力模型。并在重庆主城区河段布设高等级控制点，进行基于EGM2008全球重力模型的 CORS 三维坐标转换及检验。证实了基于EGM2008全球重力模型的 CORS 三维坐标转换精度高且可靠，真正实现了 GPS 实时三维高精度测量，具有一定参考价值。