SIMULATION TEST FOR DETERMINING 1°×1° GLOBAL GEOID WITH CENTIMETERLEVEL ACCURACY
Han Jiancheng 1) ; and Shen Wenbin 1,2)
1)School of Geodesy and Geomatics,Wuhan University,Wuhan 4300792)The Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan University, Wuhan 430079
Abstract：On the basis of a given 1°×1° global geopotential field model
with 10 -5 ms -2 level,a density model of the shallow layer with relatively high accuracy and also an accurate mean sea surface model, a theoretical approach for determining 1°×1° global geoid with centimeterlevel, by use of fictitious compress recovery method, is introduced.The simulative experiments are carried out to test this approach and the results show that, for determining the global geoid at a scale of 1°×1° of the earth model used here, the accuracy can reach centimeterlevel or even better.
