1) Key Laboratory of Dynamic Geodesy, Institute of Geodesy and Geophysics, CAS, Wuhan 430077 2) Disaster Prevention Research Institute, Kyoto University, Uji, Kyoto 611-0011, Japan 3) Department of Applied Physics, Wuhan University of Science and Technology, Wuhan 430081 4) Shanghai Astronomical Observatory, CAS, Shanghai 200030
Abstract:Firstly, the domestic and overseas Earth’s gravitational field models based on the traditional gravity measurement are looked back since 1966. Secondly, the global gravitational field models established from the data measured by CHAMP are presented. The results of EIGENCHAMP03S model are only preferably in agreement with those of EIGEN3P model in the longwavelength Earth’s gravitational field, and accord with those of EIGEN1S, EIGEN2 and EIGEN3P models in the mediumlongwavelength Earth’s gravitational field, respectively. Finally, the existing GRACE satellite gravity models are introduced. The accuracy of GGM02S model is almost the same with that of WHIGGGEGM01S due to the similar amount of satellite observations, and the accuracies of all combined models including EIGENCG01C, EIGENCG03C, EIGENGL04S1 and EIGEN5C using combined satellite observations from CHAMP, GRACE, satellite altimetry and surface gravity are higher than those of GRACEonly models including EIGENGRACE01S, EIGENGRACE02S, GGM01S, GGM02S and WHIGGGEGM01S.