The leastsquaresolution and minimum mean square error(MMSE) solution for roundness error and spindle error was derived by measurement matrix in frequency-domain.
这种方法利用频域测量矩阵直接给出了圆度形状误差和回转误差的最小二乘解或最小均方误差解。
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The leastsquare problem of the convolution result and real seismic data can be considered as the solution of a huge rarefactional matrix equation, which can be solved by singular value decomposition.
Successive approximation and leastsquare collocation are used to find the solution of geometrically nonlinear bending problem of orthotropic rectangular plates.