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《Geomatics and Information Science of Wuhan University》 2011-03
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Application of an Improved Dynamic Method Baseline Method to Satellite Gravtimetry Data Processing

XIAO Yun1 XIA Zheren1 SUN Zhongmiao1 PANG Zhenxing1 (1 Xi'an Research Institute of Surveying and Mapping,1 Middle Section,Yanta Road,Xi'an 710054,China)  
We present a new method,named baseline method,which used for recovering the Earth's gravity field and improving some parameters of initial orbital vector simultaneously.The principle of the baseline method is introduced.The formulae of transforming between baseline parameters and typical Cartesian parameters are deduced.And the sensitivities of inter-satellite observations to baseline parameters are analyzed.The two Earth's gravity field models are recovered from GRACE data by typical method and baseline method respectively,and their accuracies are evaluated.The results show that the accumulated geoid undulation error from baseline method is less 3 cm than the one from typical method.
【Fund】: 国家自然科学基金资助项目(40804001)
【CateGory Index】: P223.0
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【Citations】
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1 XU Houze 1SHEN Yunzhong 2 (1 Institute of Geodesy and Geophysics,Chinese Academy of Sciences,54 Xudong Road,Wuhan,China,430077) (2 Dept. of Surveying and Geo_informatics,Tongji University,1239 Siping Road,Shanghai,China,210094) [FK(W6?40ZQ];Simulation of Recovering Gravitational Potential Model from the Ephemeredes of CHAMP[J];Editoral Board of Geomatics and Information Science of Wuhan University;2001-06
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