ANALYSIS AND COMPARISON OF TRAJECTORY DISTURBING GRAVITY CALCULATED BY SEVERAL COMPUTATIONAL MODELS
Ma Biao 1) ;Liu Xiaogang 1,2) ;and Zhang Liping 2)
1)Institute of Surveying and Mapping, Information and Engineering University, Zhengzhou 450052;2)Xi’an Research Institute of Surveying and Mapping, Xi’an 710054
Abstract：Taking the disturbing gravity vectors calculated by the earth gravity field model of EGM2008 in 360 degrees as the “true value”, the computational results of Stokes integral model,the monolayer density model and the pointmass model are analyzed and compared. The results show that if taking account of the computational precision, the Stokes integral model is the best; if taking account of the computational velocity, the pointmass model is the best. In the specific computation, the proper model should be chosen according to the precision,velocity,parameters and the other requirements in the case.
Ma Biao ,Liu Xiaogang,and Zhang Liping . ANALYSIS AND COMPARISON OF TRAJECTORY DISTURBING GRAVITY CALCULATED BY SEVERAL COMPUTATIONAL MODELS[J]. jgg, 2012, 32(1): 105-109.
