T矩阵递推算法用于二维混合目标RCS计算

A recursive T-matrix algorithm for electromagnetic scattering of two dimensional complex target

利用递推算法计算任意形状二维导体加介质体目标的电磁散射。建立导体部分单独存在时的T矩阵 ,对于内谐振频率点上生成的病态矩阵用奇异值分解方法解决 ,用广义递推算法求出有耗介质单体T矩阵。然后采用二体散射的方法求得总散射场。

In this paper, a recursive T-matrix algorithm are applied for solution of electromagnetic field scattered by two-dimensional target consisting of conductors and inhomogeneous dielectrics with arbitrary cross section. Tmatrix of conductor is obtained from surface-integral-equation. And the singular value decomposition is used here to find out the current resonant mode. Generalized recursive aggregate T-matrix algorithm is used to calculate the dielectrics part′s T-matrix. Some numerical results obtained show the feasibility of proposed method.