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Weighted Total Least Squares to Solve Linear Model Parameters and Accuracy Estimation

ZHANG Pengjie1,2 QIU Weining1,2 CHENG Jinwei1,2 KE Shanliang1,2(1 School of Geodesy and Geomatics,Wuhan University; 2 Hazard Monitoring and Prevention Reserch Center,Wuhan University,129 Luoyu Road,Wuhan 430079,China)  
The weighted total least squares method is introduced to solve the problem that least-squares and the total least-squares method exist in the linear model,and the estimation formula of accuracy is given.The results of a linear model indicate that the weighted total least-squares can get more reasonable model and the parameters for more accurate solution,with a smaller in error.
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