Abstract:Both observation vector and coefficient matrix contain errors in the crustal deformation problem, so total least squares collocation (TLSC) is studied. Then, we give the specific formula for determining parameters and the iterative algorithm under the generalized total least squares principle. Simulated horizontal crust deformation and the actual data from 2009 L’Aquila Italy earthquake are analyzed using total least squares collocation and least squares collocation. The experimental results show that the two methods are the same in the analysis of crust deformation, and this is given theoretical support in the article.