| 等离子体涡电磁散射特性及隐身性能 |
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| 引用本文： | 常雨,陈伟芳,孙明波,吴其芬.等离子体涡电磁散射特性及隐身性能[J].航空学报,2008,29(2):304-308. |
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| 作者姓名： | 常雨 陈伟芳 孙明波 吴其芬 |
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| 作者单位： | 国防科学技术大学,航天与材料工程学院,湖南,长沙,410073 |
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| 摘 要： | 针对非均匀等离子体在飞行器隐身中的应用，采用分段线性电流密度递归卷积时域有限差分（PLJERC-FDTD）方法计算等离子体涡及涡串电磁散射特性，分析等离子体涡对飞行器隐身性能影响。计算表明，等离子体涡在很大频率区间对电磁波吸收效果显著，RCS降低很大，具有明显的隐身效果。等离子体涡表现出一定规律性的极化特性，对L,S和C波段电磁波具有不同的吸收、反射特性。
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| 关 键 词： | 时域有限差分 电磁波 等离子体 涡 雷达散射截面 隐身 |
| 文章编号： | 1000-6893(2008)02-0304-05 |
| 修稿时间： | 2007年4月27日 |
Scattering and Stealth of Plasma Vortex |
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| Chang Yu,Chen Weifang,Sun Mingbo,Wu Qifen.Scattering and Stealth of Plasma Vortex[J].Acta Aeronautica et Astronautica Sinica,2008,29(2):304-308. |
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| Authors: | Chang Yu Chen Weifang Sun Mingbo Wu Qifen |
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| Institution: | College of Aerospace and Material Engineering, National University of Defense Technology |
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| Abstract: | Aiming at the non-uniform plasma application in aircraft stealth,a piecewise linear current density recursive convolution finite-different time-domain(PLJERC-FDTD) algorithm is applied to the study on the scattering for the plasma vortex and plasma vortex cluster.The effects of plasma vortex on the aircraft stealth are analyzed.The results illustrate that the plasma vortex can absorb electromagnetic waves obviously,and the smaller radar cross section(RCS) is obtained comparing with RCS without plasma vortex.The stealth performance of vortex is remarkable.The RCS vs.polarization angle and the characteristics which electromagnetic waves are absorbed and reflected for L,S and C band follow some laws. |
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| Keywords: | FDTD electromagnetic wave plasma vortex RCS stealth |
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