IMPEDANCE MATRIX COMPRESSION (IMC) USING ITERATIVELY SELECTED WAVELETBASIS FOR MFIE FORMULATIONS

In this article we present a novel approach to incorporating wavelet e xpansions in method-of-moments (MoM) solutions for scattering problems described by a magnetic field integral equation (MFIE) formulation. I n this approach, we utilize the fact that when the basis functions use d are wavelet-type functions, only a few terms in a series expansion w ould be needed to represent the unknown quantity. An iterative procedu re is suggested to determine these dominant expansion functions. The n ew approach combined with the iterative procedure yields a new algorit hm that has many advantages over the presently used methods for incorp orating wavelets Numerical results that illustrate the approach are pr esented. (C) 1996 John Wiley & Sons, Inc.