New iterative OSMEI technique to decompose MoM matrix of 3D acoustic scattering problem

A new iterative technique on surface measured equation of invariance (OSMEI) is proposed for decomposing the method of moment (MoM) matrix of 3D acoustic scattering problem. Its´ an extension of the matrix decomposition (MD) by the OSMEI method. In the iterative procedure, the structure and the sparsity rate of OSMEI coefficients remain invariant, and it results in a significant reduction in the memory requirement and computing time. Moreover, it provides a means for systematic improvement of the solution. The numerical results of 3D acoustic scattering of a soft sphere show that this technique takes the attractive features of high accuracy and fast convergence of iterative process.