基于EGM2008重力场模型的区域似大地水准面确定  

Local Quasi-Geoid Determination Based on EGM2008 Model

作　　者：魏德宏[1] 张兴福[1] 冯冬宁[1] 

机构地区：[1]广东工业大学测绘工程系,广东广州510006

出　　处：《地矿测绘》2009年第3期17-18,21,共3页Surveying and Mapping of Geology and Mineral Resources

摘　　要：研究了利用超高阶地球重力场模型EGM2008以及GPS/水准数据确定区域似大地水准面的方法。基于该方法,计算了某一区域分辨率为2.5′×2.5′的似大地水准面模型,检核结果显示:基于该模型确定的区域似大地水准面的精度要明显优于EGM96模型,内外符合精度均优于5 cm。The method of local quasi-geoid determination is discussed based on super-high degree Earth gravity field model EGM2008 and GPS/Leveling data in this paper. A local quasi-geoid model with 2. 5＇ ＊ 2.5＇ grids has been determined based on this method, the validated results show that the local quasi-geoid model based on EGM2008 is more accurate than the model based on EGM96 and the inner and outer accuracy of the model is less 5 cm.

关 键 词：地球重力场 EGM96 EGM2008 GPS/水准数据 似大地水准面确定 

分 类 号：P223[天文地球—大地测量学与测量工程]