航空学报 > 2003, Vol. 24 Issue (2): 157-159

窗函数递推T矩阵法

程堂柏, 周建江   

  1. 南京航空航天大学信息学院 江苏南京 210016
  • 收稿日期:2002-03-06 修回日期:2002-08-10 出版日期:2003-04-25 发布日期:2003-04-25

Windowed Function Recursive T-matrix Algorithm

CHENG Tang-bai, ZHOU Jian-jiang   

  1. Information College; Nanjing University of Aeronautics and Astronautics; Nanjing 210016; China
  • Received:2002-03-06 Revised:2002-08-10 Online:2003-04-25 Published:2003-04-25

摘要: 引入数字信号处理中的窗函数, 应用于加法定理中, 解决了在入射波为TE 波时, 用递推T 矩阵法计算电大尺寸物体或多个散射体散射场时, 精度不高的问题。另外本文从积分方程出发, 推导出了总体T 矩阵的另一种表示形式, 最后给出的算例证明了引入窗函数的有效性和总体T 矩阵表达式的正确性。

关键词: 窗函数, 加法定理, 总体T矩阵, 加权因子, 矩量法

Abstract: A windowed function of data signal processing is introduced and applied to t he addition theor em, whichsucceeds in solving the difficult problem: it has a bad result when the r ecursive T-matrix is applied to calculate thewave scattering of electrically large objects and multipole objects in the excitation of TE wave. Another mode of thetotal T matrix is der ived from the integral equation. Finally, the calculation result of two dielectric cylinders pr ovest he effect iveness of the windowed function and the corr ectness of the expression of the total T-matrix.

Key words: windowed function, addition theorem, total T matrix, weight, MoM

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