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《Journal of Changchun Institute of Technology》 2004-03
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Adjusting triangulateration nets using characteristic roots method in Helmert variance components estimation

BAI Ru-yue,et al. (Architectural Engineering College, Jilin University,Changchun 130061,China)  
This paper narrates basic ideas and formula of Helmert Variance components estimation.Using characteristics of triangulateration nets variance components estimation,the paper sums up the law of calculating the weights of measured values in triangulateration nets variance components estimation,advances a simplified formula of estimating the variance components of measured values in triangulateration nets,namely characteristic roots formula.Using this formula,the complicated calculations between matrices in Helmert's formula will be turned away.
【CateGory Index】: O241
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