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《Science of Surveying and Mapping》 2006-05
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Study on ocean vertical deflection of ENVISAT satellite altimetry along-track geoid gradient

XING Le-lin ①,LI Jian-cheng ①,LIU Xiao-ling ②(① School of Geodesy and Geomatics,Wuhan University Wuhan 430079,China;② School of Resource and Environment Science,Wuhan University,Wuhan 430079,China)  
Ocean vertical deflection is analyzed using ENVISAT along-track geoid gradient data by means of least square.Firstly an approximative geoid is obtained by editing ENVISAT altimeter data and geophysics correction.Then the along-track geoid gradient and the average of grid vertical deflection are calculated.Finally the vertical deflection of Chinese south sea(4°~25°N,104°~120°E)is got with resolution of 5°×5°.The accuracy is better than 7″.Its efficiency is proved by comparing it with the model of EGM96.
【CateGory Index】: P228.3
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