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《Journal of Changchun Institute of Technology》 2002-02
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Study on adjusting rank defect free nets by the adjustment method with zero weights

WANG Zhong feng,et al. (Dept. of Land and Resources,Changchun Institute of Technology,Changchun 130021,China)  
Coefficient matrix of normal equation in rank defect free nets adjustment has two sets of charictristic roots,∧ 1 and ∧ 2, with∧ 10 and ∧ 2=0. The author supposes ∧ 1 and ∧ 2 to be weights, makes up two sets of suppositional observation equations, and then adjusts rank defect free nets by the method with zero weights. Moreover, the author indicates that the final formulae to calculate estimated parameters and their inverse weight matrix by this method are the same as the ones by the method of principal components estimation.
【CateGory Index】: P207
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1 TAO Ben zao (Wuhan Technical University of Surveying and Mapping, Wuhan 430079, China);Generalized Matrix Inverses and Adjustment of Observations[J];Engineering of Surveying and Mapping;2000-04
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1 Wang Zhongfeng; Ma Zhengzhong(Changchun Architectural College,Chanchun, China) 130012);A New Study of Adjusting Rank Defect Network by Parameter Adjustment with Constraints[J];ENGINEERING OF SURVEYING AND MAPPING;1998-02
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