Spectrum estimation apparatus and spectrum estimation method

摘要

Each element x included in the arrival wave vector x_K, So that the elements of the sparse component are gathered at the left end, each element x_K, A setting vector S in which constant components are gathered at the left end from the arrival wave vector x rearranged by the element rearranging section 3 is calculated and the vector for setting H of the matrix H A diagonal component setting unit 4 for setting a diagonal component and a matrix component corresponding to a sparse component of an arrival wave vector using a matrix H and a matrix b in which diagonal components are set by the diagonal component setting unit 4 And an arrival wave matrix updating unit 5 for updating the arrival wave matrix X in a form of reusing the calculation result.