Research on Fast Construction Method of Large Scale Point Mass Model
Abstract Point mass model is widely used in physical geodesy, but several challenges are faced in achieving high performance when solving linear equations. This paper presents a stratified residual point mass model based on window control, which converts the dense linear equation into sparse format. An 112 896-order sparse linear equation is solved on an ordinary computer. In order to illustrate the practicability of window control method, an experiment is carried out to calculate disturbing gravity at various altitudes. The performance results demonstrate that window control method achieves better precision and efficiency compared with traditional methods and is very well suited for large scale point mass construction.
Key words :
point mass model
window control
sparse matrix
compressed sparse row(CSR)
disturbing gravity
Cite this article:
HUANG Jiaxi,WANG Qingbin,ZHANG Chao et al. Research on Fast Construction Method of Large Scale Point Mass Model[J]. jgg, 2017, 37(1): 11-15.
HUANG Jiaxi,WANG Qingbin,ZHANG Chao et al. Research on Fast Construction Method of Large Scale Point Mass Model[J]. jgg, 2017, 37(1): 11-15.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2017/V37/I1/11
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FAN Haopeng,WANG Qingbin,WU Xiaoping. The Application and Analysis of Wide-Area Polynomial
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[3]
Wang Yi,Jiang Xiaodian. STRUCTURE OF MULTILAYERED SPHERICAL CAP HARMONIC MODEL [J]. jgg, 2014, 34(5): 30-34.
[4]
Wang Jianqiang, Li Jiancheng, Zhao Guoqiang, Xu Xiaobo. FAST CALCULATION OF EARTH’S DISTURBING GRAVITY THROUGH
POLYNOMIAL FITTING [J]. jgg, 2013, 33(4): 52-55.
[5]
Gao Xinbing;;Li Shanshan;Li Hai;Zhang Hongwei;and Wang Yingjian. APPLICATION OF POINT MASS MODEL AND LEAST SQUARECOLLOCATION IN MULTI-SOURCE GRAVITY DATA FUSION [J]. , 2013, 33(1): 145-149.
[6]
Ma Biao ;Liu Xiaogang;and Zhang Liping . ANALYSIS AND COMPARISON OF TRAJECTORY DISTURBING GRAVITY CALCULATED BY SEVERAL COMPUTATIONAL MODELS [J]. , 2012, 32(1): 105-109.
[7]
Wang Qingbin;Zhao Dongming;Sun Wen;and Zhou Rui. RESEARCH ON ACCURACY OF POINT MASS MODEL USING AUSTRALIAN GROUND AND AIRBORNE GRAVITY DATA [J]. , 2011, 31(4): 76-79.
[8]
Wu Xing;Zhang Chuanding ;Wang Kai ;and Feng Wei . LINE-MASS HARMONIC ANALYSIS METHOD BASED ON SATELLITE GRAVITY GRADIENT DATA [J]. , 2010, 30(6): 95-99.
[9]
Liu Xiaogang;Wu Xiaoping;Zhao Dongming; and Wu Xing;. COMPARISON BETWEEN TRAJECTORY DISTURBING GRAVITY CALCULATED WITH EARTH GRAVITY FIELD MODELS OF EGM96 AND EGM2008 [J]. , 2009, 29(5): 62-67.
[10]
Zhou Shichang;Wang Qingbin;and Zhu Leiming. RESEARCH OF IMPROVED FICTIOUS COMPRESS RECOVERY APPROACH FOR APPROXIMATING LOCALLY DISTURBING GRAVITY [J]. , 2009, 29(1): 88-90.