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《Developments In Surveying and Mapping》 2002-02
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Ill-conditioning Diagnostics Based on Eigensystem

GUI Qing-ming ①② , GUO Jian feng ② ,BIAN Shao feng ②(①Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077,China;②Institute of Surveying and Mapping, Information Engineering University,Zhengzhou 450052,China)  
The feature analysis and condition number method based on eigensystem are widely applied in ill conditioning diagnostics. The purpose of this paper is to discuss the concept, difference and relations of the two presented methods. The condition number method can improve the feature analysis method, but can't replace it. At last, some results are given.
【Fund】: 国家杰出青年科学基金项目 (4 0 12 5 0 13) (4 982 5 10 7) ;; 国家自然科学基金项目 (4 0 0 740 0 6 ) ;; 河南省科技攻关项目 (0 12 4140 15 8)
【CateGory Index】: P207
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