EGM96/2008重力场模型在似大地水准面构建中的应用  

Application of EGM96/2008 Gravity Field Model in the Construction of Quasi Geoid in Mining Area

作　　者：王鸣鹤 孙成志 许丹萍 吴晓倩 WANG Minghe;SUN Chengzhi;XU Danping;WU Xiaoqian(College of Geomatics,Shandong University of Science and Technology,Qingdao Shandong 266000,China;Junan Natural Resources and Planning Bureau,Qingdao Shandong 276600,China)

机构地区：[1]山东科技大学测绘科学与工程学院,山东青岛266000 [2]莒南县自然资源和规划局,山东临沂276000

出　　处：《北京测绘》2020年第5期687-690,共4页Beijing Surveying and Mapping

摘　　要：似大地水准面的构建可以将GPS测量的高程迅速转化为正常高,极大降低高程测量的成本,提高相关工作效率。将EGM96/2008重力场模型与“移去-恢复”法相结合,在矿区内建立似大地水准面,并使用不同的插值方法,验证最优方案。结果表明,使用二次线性插值的EGM2008重力场模型拟合效果更好,模型外符合精度达到3.6 mm,更适合应用于该区域似大地水准面构建。The construction of quasi geoid can quickly convert the elevation measured by GPS into normal height,greatly reduce the cost of elevation measurement and improve the efficiency of related work.The EGM96/2008 gravity field model is combined with the“remove restore”method to establish the quasi geoid in the mining area,and different interpolation methods are used to verify the optimal scheme.The results show that the egm2008 gravity field model with quadratic linear interpolation has a better fitting effect,and the outer fitting accuracy of the model reaches 3.6 mm,which is more suitable for the construction of quasi geoid in this area.

关 键 词：EGM96模型 EGM2008模型 似大地水准面 高程异常 移去-恢复 

分 类 号：P224[天文地球—大地测量学与测量工程]