基于WKB方法的闭式等离子体厚度分析  

Analysis of the Thickness of Closed Plasma Based on the WKB Method

作　　者：王瑞[1,2] 刘战合[1] 黄沛霖[1] 李洁[1] 

机构地区：[1]北京航空航天大学,北京100191 [2]上海飞机设计研究院,上海200232

出　　处：《战术导弹技术》2012年第2期6-10,共5页Tactical Missile Technology

摘　　要：基于WKB方法,对均匀非磁化闭式等离子体的厚度进行分析。分析了闭式等离子体吸收效果与等离子体碰撞频率的关系。根据雷达现实使用情况,详细研究了X、C、S三个特征波段在不同的电磁波减缩效果下等离子体厚度与等离子体频率以及等离子体电子数密度的关系,得到了各种情况下的关系曲线。结果表明,通过调节等离子体电子数密度可以改变各波段不同隐身效果下的等离子体厚度。对比了电子数密度分布不均匀时的情况,数值算例表明,相同隐身效果下,均匀分布的等离子体厚度与线性分布情况相近,大于抛物线分布时的厚度。Based on the WKB method,the thickness of the uniform non-magnetized closed plasma is analyzed.The relation between the absorption of closed plasma and the plasma collision frequency is also analyzed.According to the actual radar usage,a detailed study on the relevance between the plasma thickness and the plasma collision frequency,the plasma thickness density in the different electromagnetic wave reduce in the three characteristic electromagnetic waves bands X,C and S is carried out,and these relationship curves are obtained.The results show that the plasma thickness in different wave bands and different stealth effect can be changed by adjusting the plasma electron density.The result in the uniform plasma is compared with that of the uneven distribution of electron density plasma.Numerical examples show that the thickness of the uniform plasma is similar with that of the linear electron density distribution plasma,and greater than that of the parabola electron density distribution plasma.

关 键 词：飞行器隐身 闭式等离子体 均匀分布 

分 类 号：TJ765.5[兵器科学与技术—武器系统与运用工程]