论文部分内容阅读
为了建立电磁波在亚波长等离子体薄层中传播的物理数学模型,并针对通信频段的电磁波,研究电磁波在再入航天器表面等离子体薄层中的透射问题,相关研究成果可为再入航天器通信“黑障”现象研究提供理论基础。模型从麦克斯韦方程组出发,采用微分薄层法进行数值求解,获得了不同等离子体密度条件下亚波长等离子体中目标电磁波的透射特性及传播规律,揭示了截止反射效应和碰撞吸收效应在其中发挥的作用。本研究对于深入了解亚波长碰撞等离子体薄层中电磁波的传播过程具有意义。
In order to establish the physical mathematic model of electromagnetic wave propagating in the subwavelength plasma layer and study the electromagnetic wave transmission in the frequency band of the reentry spacecraft for the electromagnetic wave in the communication frequency band, the related research results can be used for reentry spacecraft Communication “black barrier ” phenomenon to provide a theoretical basis for the study. The model is derived from Maxwell’s equations and the numerical solution is obtained by using the differential thin-layer method. The transmission characteristics and propagation of the target electromagnetic wave in the sub-wavelength plasma under different plasma densities are obtained. The effects of the cutoff reflection and the collision absorption are shown Role. This study is of great significance for understanding the propagation of electromagnetic waves in sub-wavelength collisional plasma.