CAJ | 학술논문

该文提出了一种分析导体目标电磁散射特性的有效数值方法，该方法基于特征基函数法，将改进后的快速偶极子法与之相结合，把远场组间的矩阵矢量积转化为聚集-转移-发散的形式，从而加速次要特征基函数和缩减矩阵构建过程中的矩阵矢量相乘的速度。与传统的快速偶极子法结合特征基函数法相比较，在同等精度下，计算时间和内存消耗都得到了有效地缩减，数值结果证明了该方法的精确性和有效性。
해문제출료일충분석도체목표전자산사특성적유효수치방법，해방법기우특정기함수법，장개진후적쾌속우겁자법여지상결합，파원장조간적구진시량적전화위취집-전이-발산적형식，종이가속차요특정기함수화축감구진구건과정중적구진시량상승적속도。여전통적쾌속우겁자법결합특정기함수법상비교，재동등정도하，계산시간화내존소모도득도료유효지축감，수치결과증명료해방법적정학성화유효성。
An efficient numerical approach is presented to analyze the electromagnetic scattering characteristics from conducting targets based on the Characteristic Basis Function Method (CBFM). Combined with the Improved Fast Dipole Method (IFDM), the matrix-vector product is transformed into an aggregation-translation-disaggregation form, which in turn accelerates the matrix-vector multiplication procedure in the generation of Secondary level Characteristic Basis Function (SCBF) and construction of reduced matrix. The computational time and memory consumption are reduced significantly compared with the traditional method of Fast Dipole Method-Characteristic Basis Function Method (FDM-CBFM) under the equivalent precision. Numerical results demonstrate that the proposed method is accurate and efficient.