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《Science of Surveying and Mapping》 2010-05
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Fitting method by selection of the parameter weights and quasi-accurate detection of gross error

WANG Ai-sheng,XU Chun-yan(School of Geodesy and Geomatics,Xuzhou Normal University,Xuzhou 221116,China)  
The essential difference between the quasi-accurate detection of gross error and LEGE was proposed in this paper.By analysis of mathematical models of the Fitting Method by Selection of the Parameter Weights and the quasi-accurate detection of gross error,it could be found that the quasi-accurate detection of gross is a special form of the Fitting Method by Selection of the Parameter Weight.The estimation formula of the real errors in the method of quasi-accurate detection in which the least square correction weight is used and which is different from the previous formula,could be derived based on the principle of the Fitting Method by Selection of the Parameter Weight.But the reliability matrix is rank deficient and the correction weight can not be calculated,so the observation weights have to be adopted directly.At last,the formula similar with the previous one was obtained.
【Fund】: 国家自然科学基金(50774067;40874011)
【CateGory Index】: P228.4
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