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《Acta Geodaetica et Cartographica Sinica》 2011-04
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Improved Method for Removal of Correlated Errors in GRACE Data

ZHAN Jingang1,2,WANG Yong1,HAO Xiaoguang11.Institute of Geodesy and Geophysics,Chinese Academy of Sciences,Wuhan 430077,China;2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China  
The error of the GRACE potential coefficients increases towards higher spherical-harmonic degrees,and the result of gravity anomalies computed from GRACE data will be dominated by errors such as stripes.Swenson proposed an empirical moving window filtering method to remove the correlation and shows a significant effect in the region on both sides of the equator,but it is not provided more details about the method in the paper.Many researchers did not get the desired effect followed the principle of Swenson when filtering.The authors improved the technology of data processing and achieved the expected results.Then,the validity of the improved method using GLDAS data are proved.
【Fund】: 国家自然科学基金(40974044;41074051);; 中国科学院知识创新工程重要方向项目(kzcx2-yw-125;kzcx2-yw-143)
【CateGory Index】: P223
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