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《Journal of Geodesy and Geodynamics》 2007-03
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TIME DOMAIN LEAST SQUARES METHOD FOR RECOVERING EARTH'S GRAVITY FIELD BY SATELLITE GRAVITY GRADIENT

Zou Zhengbo1,2),Luo Zhicai3,4),Xing Lelin1,2),Wu Yunlong3)and Li Hui1,2)1)Institute of Seismology,CEA,Wuhan 4300712)Crustal Movement Laboratory,Wuhan 4300713)School of Geodesy and Geomatics,Wuhan University,Wuhan 4300794)Geomatics and Apllications Laboratory,Liaoning Technical University,Fuxin 123000  
Since the attenuation of the gravitaty field with altitude increasing can be sufficiently compensated by satellite gravity gradiometry,it is possible to recover earth's gravity field with higher precision.On the basis of the satellite orbit perturbation theory,the error of gravity field model from satellite gravity gradiometry mission is analyzed with the time-wise least square method.And the effects of gravity field on the accuracy are presented in maps,due to the choice of SGG parameters(such as satellite's altitude,sampling rates,inclination of satellite and accuracy of gradiometery).The results indicate that time domain least-square method is suitable for the error analysis and the mission design of the measurement of satellite gravity gradiometery.
【Fund】: 国家自然科学基金(40374006);; 辽宁工程技术大学地理空间信息技术与应用实验室开放基金
【CateGory Index】: P223
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【Citations】
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【Co-citations】
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