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《Journal of Geodesy and Geodynamics》 2006-02
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PROCESSING METHOD OF CHAMP ATTITUDE DATA GAP AND ACCURACY ANALYSIS

Hu Leiming1),Zhang Xingfu1) and Shen Yunzhong1,2) 1) Department of Surveying and Geo-Informatics, Tongji University,Shanghai 200092 2) Key Laboratory of Modern Engineering Survey of SBSM, Shanghai 200092  
For searching the preprocessing method of CHAMP accelerometry data,the variation of attitude data gap has been analyzed,then the method of quadratic interpolation was used for processing the attitude data gap. The statistical results from observed CHAMP accelerometry data show that the accuracy by quadratic interpolation is higher than that by linear interpolation; the influences of interpolated attitude data to observed acceleration is less than 10+{-9}ms+{-2}, which can satisfy the requirement of accuracy in case of data gap less than 40 epochs.
【Fund】: 国家自然科学基金(40234039 40474006)
【CateGory Index】: P228
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