摘要
利用高精度的GPS水准数据、重力数据、数字地形模型和EGM2008地球重力场模型,采用移去-恢复技术计算了合肥市厘米级大地水准面模型。将该模型大地水准面高与GPS水准得到的大地水准面高进行比较,其差值的标准差为±1.4 cm。
The geoid of Hefei has been constructed with remove-restore technique,using GPS/leveling data,gravity data,digital terrain model and global earth＇s gravity field model EGM2008.The modeled geoid heights were compared with the observed ones derived from GPS/leveling data that not applied to the construction of Hefei geoid.The test results show that the standard deviation of the differences is ±1.4cm.
出处
《城市勘测》
2011年第3期76-77,90,共3页
Urban Geotechnical Investigation & Surveying
