提高1∶50000重力调查中测地工作精度的几种方法

Several Methods of Improving the Accuracy of Geodetic Operation in Gravity Investigation of 1∶50000

介绍了1∶50 000重力勘查中提高测地工作的新思路,提出了采用GPS-RTK方法,利用CORS网站测定重力测点点位3维坐标的作业方法、消除高程异常影响而建立似大地水准面模型的方法及建立DTM数字高程模型在计算机上进行地形改正方法等。

This paper introduces the new idea in geodetic operation in gravity investigation of 1∶50 000,puts forward operational methods using GPS-RTK method and CORS network of obtaining the 3D coordinates of gravity measurement points,methods of eliminating elevation abnormality in order to build quasi-geoid and methods of building up DTM digital elevation model for computerized correction of topography.