[1]何湘,陈建平,倪晓武,等.雷达隐身等离子体参数优化设计[J].南京理工大学学报(自然科学版),2010,(03):401-405.
 HE Xiang,CHEN Jian-ping,NI Xiao-wu,et al.Optimization of Plasma Parameters for Radar Stealth[J].Journal of Nanjing University of Science and Technology,2010,(03):401-405.
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雷达隐身等离子体参数优化设计
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2010年03期
页码:
401-405
栏目:
出版日期:
2010-06-30

文章信息/Info

Title:
Optimization of Plasma Parameters for Radar Stealth
作者:
何湘1 陈建平2 倪晓武1 吴 莹1 陈玉东2 曾小军2 秦海潮2
1. 南京理工大学理学院, 江苏南京210094; 2. 北京航空工程技术研究中心, 北京100076
Author(s):
HE Xiang1CHEN Jian-ping2NI Xiao-wu1WU Ying1CHEN Yu-dong2ZENG Xiao-jun2QIN Hai-chao2
1.School of Sciences,NUST,Nanjing 210094,China;2.Beijing Aeronautical Technology Research Center,Beijing 100076,China
关键词:
雷达 隐身 等离子体 电子数密度 碰撞频率 厚度
Keywords:
radars stealth plasmas electric number density collision frequency thickness
分类号:
O539
摘要:
针对等离子体对雷达波的吸收、衰减问题,采用求解波动方程的方法,计算了非均匀等离子体覆盖的金属目标对雷达波的反射。选取非均匀等离子体的最大电子数密度为5×1016~1018m-3,碰撞频率为10-1~103GHz,等离子体厚度为0~0.5 m。研究结果表明:提高等离子体电子数密度能够增强对高频雷达波的隐身效果,但同时需合理提高碰撞频率以保证对低频雷达波的隐身能力;有效增加等离子体厚度,可降低对等离子体源电子数密度的要求几倍甚至数十倍;当等离子体密度梯度较大时,出现非线性衰减,此时增加等离子体的厚度不再改善隐身效果。计算了在不同电子数密度和碰撞频率下,达到10 dB雷达隐身要求所需要的等离子体厚度。结果表明在等离子体电子数密度受限时,通过对等离子体的碰撞频率和厚度的参数优化,可以达到最佳的隐身效果。
Abstract:
Aming at the problems of the Absorption and attenuation of radar waves by plasma,the reflection of radar waves by a metal target covered with inhomogeneous plasma is calculated by solving the wave equations.The plasma is chosen in the peak electric number density of 5×1016~1018 m-3,the collision frequency of 10-1~103 GHz and the thickness of 0~0.5 m.The results show that the stealth against high-frequency radar waves is enhanced with the increase of electric number density,and the collision frequency needs to be improved simultaneously to ensure the stealth against low-frequency radar waves.If the thickness of plasma is increased effectively,the required plasma density can be decreased several or even tens of times.If the plasma density gradients become sharper,the nonlinear attenuation appears.The stealth effect can not be enhanced significantly with the increase of the plasma thickness.To meet the stealth requirement of 10dB radar,the required thickness of plasma is calculated under various electric number densities and collision frequencies.The results show that the most efficacious stealth can be achieved by optimizing the plasma parameters of collision frequency and thickness under the limited electric number density of plasma.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 何湘( 1981- ), 女, 博士, 主要研究方向: 微波与等离子体的相互作用, E-mail: he_hex iang@ 163. com; 通讯作者: 倪晓武( 1955- ) , 男, 博士, 教授, 博士生导师, 主要研究方向: 激光物理、激光超声、光生物医学、激光测试技术等, E-mail: jsn jnxw@ gmail. com。
更新日期/Last Update: 2010-06-30