RESEARCH ON 3D TROPOSHPERIC DELAY TOMOGRAPHY BASED ON
BACKPROJECTION METHOD
1）School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221008
2）Key Laboratory of Resources and Environmental Information Engineering of Jiangsu Province, Xuzhou 221008
Abstract：Tropospheric delay density is resolved with the groundbased GPS monitoring network data in USA solved by the GAMIT/GLOBK software based on tropospheric slant path total delay virtualized by backprojection method. Tropospheric delay 3D feature is analyzed by the method of tomography.The result shows that zenith total delay solved by two methods is small, the maximum error is less than 5 mm, and the mean square is 4.1 mm.
