CAJ | 학술논문

提出基于高阶拟合的多层快速多极子算法,用于分析有耗半空间上方导体目标的电磁散射.采用高阶拟合方法将远区相互作用单元的半空间空域格林函数用级数表示,对高阶拟合项作加法定理展开,进而应用多层快速多极子算法.该方法具有分组小,内存需求低,易于实现的优点.用数值算例验证其正确性与有效性.
제출기우고계의합적다층쾌속다겁자산법,용우분석유모반공간상방도체목표적전자산사.채용고계의합방법장원구상호작용단원적반공간공역격림함수용급수표시,대고계의합항작가법정리전개,진이응용다층쾌속다겁자산법.해방법구유분조소,내존수구저,역우실현적우점.용수치산례험증기정학성여유효성.
Electromagnetic scattering of conducting targets located above lossy half-space is analyzed with multilevel fast multipole algorithm(MLFMA).In order to expand half space Green's functions with addition theorem,a high order approximation method is proposed for evaluation of reflection term of half-space Green's functions with far interactions.A careful investigation is presented to confirm accuracy of the Green's function analysis.Accuracy and efficiency of the proposed method is examined by several numerical applications.It demonstrates that the proposed method has merit of low memory requirement and simple operation.