Keywords
hiệp phương sai lý thuyết
phương pháp collocation bình phương nhỏ nhất
dị thường trọng lực
khớp hàm hiệp phương sai experimental covariance
theoretical covariance
least squares collocation method
gravity anomaly
match the covariance function
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Abstract
This paper researchs to determine optimal parameters of theoretical covariance functions in LSC method. The theoretical basis of method had been studies in detail. On the theoretical basis, the program "Fitting Covariance Function" determines the optimal parameters of the theoretical covariance function built in C# language. On the new program, the authors have experimentally calculated the data in the Central region, the optimal parameters obtained are: N = 224; f = 0,108; A = 0,15.106; Phương sai = 125,91 mGal2; RE-RB = -0,471 km. Received parameters were checked manually on the program “COVFITˮ in GRAVSOFT software package to confirm the correctness. Compared to "COVFIT", the new program has the following advantages: Automatic calculation, no need to enter inputThe parameters; Automatic plotting of emprical and theoretical covariances; Automatic filters the optimal parameters; The calculator does not need deep expertise and a lot of experience. The program has overcome the limitations of the program “COVFITˮ