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《Journal of Geomatics》 2015-01
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Gravity Anomalies Based on Least Square Collocation and MATLAB

MO Huihua;LIU Jiandong;YU Binbin;LI Xiaojun;Nanlang Surveying and Mapping Co.,Ltd.;School of Geodesy and Geomatics,Wuhan University;Institute of Seismology,CEA;Zhongxin Surveying and Mapping Co.,Ltd.;  
Firstly,the mathematical formulas of least squares collocation are derived in detail in this paper. And the area with measured gravity anomalies and the known plane coordinates are gridded by MATLAB. Secondly,the algorithm of least Ssquares configuration is utilized to calculate the value of gravity anomaly of each grid node. Thirdly,by programming with the MATLAB language,the gravity anomalies within the grid are not only interpolated,but also the ichnography and 3D contour map are drawn. Finally,the similarities and differences of the contour maps are compared between adding a new point of known gravity and removing it,the cause of which is discussed.
【Fund】: 国家自然科学基金资助项目(41374012);; 国家863计划资助项目(2008AA12Z308)
【CateGory Index】: P223.7
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