Block Matrix Preconditioner와 IE-FFT를 이용한 침투가능한 구조물의 전자기 산란해석에 관한 연구
A Study on Electromagnetic Scattering Analysis of Penetrable Objects Using Block Matrix Preconditioner(BMP) and IE-FFT
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초록
본 논문은 integral equation-fast Fourier transform(IE-FFT)과 block matrix preconditioner(BMP)를 이용하여 침투 가능한 구조물의 전자기 산란 문제를 다룬다. IE-FFT는 모멘트 법(the method of Moments：MoM)에 의해 형성된 행렬방정식의 해를 계산하기 위하여 반복법의 연산량을 상당히 개선할 수 있다. 또한 전기적으로 커다란 구조물로부터 형성된 행렬방정식에 BMP가 적용된 반복법을 적용하면 반복 횟수를 크게 줄여 행렬방정식의 해를 빠르게 계산할 수 있다. 수치해석 결과는IE-FFT와 BMP를 적용하여 침투 가능한 구조물의 전자기 산란 문제를 빠르고 정확하게 계산할 수 있음을 보여준다.
Abstract
In this paper, we presents the integral equation-fast Fourier transform(IE-FFT) and block matrix preconditioner(BMP) to solve electromagnetic scattering problems of penetrable structures composed of dielectric or magnetic materials. IE-FFT can significantly improve the amount of calculation to solve the matrix equation constructed from the momentmethod(MoM). Moreover, the iterative method in conjunction with BMP can be significantly reduce the number ofiterations required to solve the matrix equations which are constructed from electrically large structures. Numericalresults show that IE-FFT and block matrix preconditioner can solve electromagnetic scattering problems for penetrableobjects quickly and accurately.
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