地球重力场模型在GPS高程测量中的应用

Application Research of EGM2008 Model in GPS Elevation Survey

介绍了地球重力场模型(EGM2008)及其精度,对利用EGM2008模型进行GPS高程测量这一方法进行了探讨。在试验区内采用多种方案进行数据处理,结合试验区内的已有GPS水准点资料的情况进行了分析,通过对多种方案进行比较分析,得出了利用EGM2008模型进行GPS高程测量的精度与采用水准点的大致关系,为GPS高程测量提供一种新思路。

EGM2008 model and its accuracy is introduced. EGM2008 model in GPS elevation survey is presented. In test area, we tried multi-methods to do data process,combined with the existing GPS level points. Through comparison and analysis of multi-methods, we find the relations between EGM2008 model in GPS elevation survey accuracy and level points survey, which sives a new ways for GPS elevation survey.