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《Geomatics and Information Science of Wuhan University》 2006-07
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Local Fictitious Downward Continuation of Gravity Field and Simulation Experiment Tests Using EGM96 Model

SHEN Wenbin~(1,2) YAN Jianguo~(1) CHAO Dingbo~(1,2)(1 School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road, Wuhan 430079,China)(2 Laboratory of Geospace Environment and Geodesy,Ministry of Education,Wuhan University,129 Luoyu Road,Wuhan 430079,China)  
Based on the fictitious compress recovery approach the fictitious downward continuation is clarified,which has theoretically solved the downward continuation of gravity field.To test the correction of the theory,simulation experiments are executed using EGM96 model.Simulation experiment results support the local fictitious downward continuation approach.Meanwhile,in the case that the observation values contain random errors,the simulation experiment tests show that the local fictitious downward continuation approach is stable,almost not losing the accuracy.
【Fund】: 国家自然科学基金资助项目(40174004 40574004);; 武汉大学地球空间环境与大地测量教育部重点实验室开放研究基金(测绘基础研究)资助项目(03-04-13);; 国家教育部留学回国人员科研启动基金资助项目
【CateGory Index】: P223
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