| 基于FFT求取直导线散射体极点的一种新方法 |
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| 引用本文： | 吴先良,焦丹.基于FFT求取直导线散射体极点的一种新方法[J].东南大学学报(自然科学版),1997,27(5):109-113. |
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| 作者姓名： | 吴先良 焦丹 |
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| 作者单位： | 安徽大学电子工程与信息科学系 |
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| 摘 要： | 传统的理论求解极点的方法一般都来源于奇点展开法，采用矩量法化积分方程矩阵方程，然后利用迭代法、围线积分法或Ｋｕｈｎ法等方法求解超越方程。这样不可避免地引入了很多计算误差，影响了极点提取的精度。
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| 关 键 词： | 快速付里叶变换 散射 极点 电磁散射 |
New Algorithm for Calculating Poles of a Thin Wire Scatter by FFT Method |
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| Wu Xianliang,Jiao Dan,Fu Biao.New Algorithm for Calculating Poles of a Thin Wire Scatter by FFT Method[J].Journal of Southeast University(Natural Science Edition),1997,27(5):109-113. |
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| Authors: | Wu Xianliang Jiao Dan Fu Biao |
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| Abstract: | The traditional analytical method to calculate complex natural frequencies usually originates from singularity expansion method which brings about many computation errors and affects the precision and speed to obtain poles. A new method to calculate poles of the scattering object is proposed, which solves the roots of the Fourier transform of the integration kernel function. As an example, the poles of a thin wire parallel to ground plane are obtained with high precision on very short time by using this method. |
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| Keywords: | FFT scatter pole |
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