用于大纵横比物体二维电磁散射问题的推广T矩阵方法

The Extended T-matrix Method for the Scattering Problem with Large Aspect Ratio

由于原始的T矩阵不适用于求解具有大纵横比物体的电磁散射问题，针对二维问题，本文通过对其格林函数的椭圆柱波函数展开，提出一种求解二维电磁散射问题椭圆柱波函数的T矩阵程式（以下称作为推广T矩阵）；同时，本文还就推广T矩阵的具体运算给出了应用实例，结果表明：推广T矩阵能够很好地用于谐振频域的大纵横比物体的电磁散射问题。

Since the original T-matrix rnethed can not be available to determine the scatteringfield under the condition of large aspect ratio scattering bedy of resonant mede, a developed T-matrixmethod (here what we call it Extended T-Matrix Methed) which is baed on the cylindrical wavefunction is proposed for the two-dimensional problem in this paper. And the computer computationpractice is also given. The numerical results declare the extended T-Matrix method can be well applied to the scattering problem mentioned above.