Adaptive multiscale moment method for analysis of scattering from a perfectly conducting plate

An adaptive multiscale moment method (AMMM) is presented for discussing the electromagnetic scattering from thin, perfectly conducting plates. By use of the matrix transformation which is derived form solving the first-kind Fredholm equation by the multiscale technique, the current, source terms and impedance matrix resulting from the conventional moment method can be arranged in the form of the different scales. From one scale to another scale, the initial guess can be predicted according to the properties of the multiscale technique. The AMMM can reduce automatically the size of the linear equation so as to improve the efficiency of the conventional moment method. Several numerical results are presented, which demonstrate that the AMMM is a useful method to analyze the scattering problems.