基于EGM2008模型的山地地区水准拟合研究

Research on Leveling Fitting of Mountain Area Based on EGM2008 Model

随着地球重力场模型精度和分辨率的不断提高,但在高差较大的山地地区的水准拟合精度不高。基于此,提出了一种基于EGM2008模型和多面函数的“移去-恢复”水准拟合方法;并以河南省某山地高差较大地区为例进行了计算。结果表明,该方法拟合精度可达2 cm。

With the continuous improvement of the accuracy and resolution of the earth gravity field model, the leveling fitting accuracy is not high in mountainous area with large elevation difference. In order to solve this problem, we proposed a "remove-recovery" leveling fitting method based on the EGM2008 model and polyhedral function. And then, taking a mountainous complex area in Henan Province for example, the result showed that the fitting accuracy of this method could reach 2 cm.