| 基于时域混合场积分方程求解目标瞬态散射特性 |
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| 引用本文： | 任猛,周东明,刘锋,何建国.基于时域混合场积分方程求解目标瞬态散射特性[J].电子与信息学报,2008,30(2):494-497. |
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| 作者姓名： | 任猛 周东明 刘锋 何建国 |
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| 作者单位： | 国防科技大学电子科学与工程学院,长沙,410073 |
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| 摘 要： | 当入射平面波的频谱包含目标的谐振频点时，时域电场积分方程和时域磁场积分方程求解的表面电流不稳定，会出现后期震荡现象。通过线性组合时域电场积分方程和时域磁场积分方程，可以获得一种混合场积分方程。数值结果显示，这种混合场积分方程消除了因内部谐振引起的后期震荡，得到了稳定的表面电流分布和远区散射场。
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| 关 键 词： | 时域混合场积分方程 瞬态特性 内部谐振 后期震荡 |
| 文章编号： | 1009-5896（2008）02-0494-04 |
| 收稿时间： | 2006-07-24 |
| 修稿时间： | 2006-12-25 |
The Solution of Time-Domain Combined Field Integral Equation for Transient Scattering by Conducting Surfaces of Arbitrary Shape |
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| Ren Meng,Zhou Dong-ming,Liu Feng,He Jian-guo.The Solution of Time-Domain Combined Field Integral Equation for Transient Scattering by Conducting Surfaces of Arbitrary Shape[J].Journal of Electronics & Information Technology,2008,30(2):494-497. |
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| Authors: | Ren Meng Zhou Dong-ming Liu Feng He Jian-guo |
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| Affiliation: | College of Electronics Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | The time-domain EFIE and MFIE approaches produce late-time oscillation for transient scattering responses from conducting objects when the incident spectrum of the field contains frequency components,which may correspond to the internal resonance of the structure.A time-domain Combined Field Integral Equation (CFIE)is presented.This formulation is based on a linear combination of the time-domain EFIE with MFIE. Numerical results for the EFIE,MFIE,and CFIE are presented and compared with those obtained from the Inverse Discrete Fourier Transform(IDFT)of the frequency-domain CFIE solution.And the time-domain CFIE solutions devoid of any resonant components. |
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| Keywords: | Time-Domain Combined Field Integral Equation(TD-CFIE) Transient response Internal resonance Late-time oscillation |
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