Open Access

ARTICLE

A New Method of Moments Solution Procedure to Solve Electrically Large Electromagnetic Scattering Problems

T.N. Killian¹, S.M. Rao¹ and M.E. Baginski¹

1 Department of E& CE, Auburn University, Auburn, AL 36849 (USA)

Computer Modeling in Engineering & Sciences 2009, 46(3), 255-270. https://doi.org/10.3970/cmes.2009.046.255

Abstract

In this work, we present a new method of moments solution procedure for calculating acoustic/electromagnetic scattering and radiation by a metallic body whose physical dimension is very large with respect to wavelength. The specially computed basis functions and the testing procedure results in a block-diagonally-dominant moment matrix where each block along the diagonal corresponds to a portion of the structure. The new solution procedure results in considerable savings in terms of computer storage and processing times. Although the procedure is outlined in general mathematical terms, the numerical results are presented only for electromagnetic scattering from two-dimensional bodies and compared with the classical method of moments solution procedure. However, the procedure is the same for three-dimensional bodies and scattering/radiation phenomenon.

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Keywords

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