摘要
利用65个精度优于2cm的GPS水准数据、5213个实测重力点数据、100m分辨率的数字地形模型和WDM94地球重力场模型,采用移去 恢复技术计算了深圳市1km分辨率的大地水准面模型。将该模型大地水准面高与由29个GPS水准得到的大地水准面高进行比较,其差值的标准差为±1.4cm。
The geoid of Shenzhen with onekilometer resolution, has been constructed with removerestore technique, using 65 GPS/leveling data with accuracy better than 2 cm, 5 213 discrete gravity data, digital terrain model with 100 m resolutions and global earth's gravity field model WDM94. The modeled geoid heights were compared with the observed ones derived from 29 GPS/leveling data that not applied to the construction of Shenzhen geoid. The test results show that the standard deviation of the differences is ±1.4 cm.
出处
《测绘学报》
EI
CSCD
北大核心
2003年第2期102-107,共6页
Acta Geodaetica et Cartographica Sinica
基金
深圳市规划与国土资源局资助项目
香港研究资助局(RGC)资助项目(B.34.37.Q328)
