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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 a uniform non-magnetized closed plasma is analyzed. The relationship between the plasma absorption and plasma collision frequency is analyzed. According to the actual use of radar, the relationship between plasma thickness, plasma frequency and plasma electron density under different electromagnetic wave reduction effects is studied in detail in the three characteristic bands of X, C and S, and the relation curve under various conditions is obtained . The results show that by adjusting the plasma electron density, the plasma thickness under different stealth effects can be changed. The numerical results show that under the same stealth effect, the uniform thickness of the plasma is almost the same as that of the linear distribution, which is larger than the thickness of the parabolic distribution.