摘要
电磁波与等离子体相互作用是等离子体隐身技术的关键技术,也是空天信息对抗的重要研究方向。采用时域有限差分法模拟了电磁波在非均匀等离子体中的衰减效应,采用空间投射波法测量了C波段电磁波在非均匀等离子体中的衰减系数,分析了等离子体分布对衰减效应的影响。研究结果表明,非均匀等离子体相比于均匀等离子体对电磁波衰减效应更为明显,合理的等离子体分布有助于增强对电磁波的衰减作用。
Interaction between electromagnetic wave and plasma is the key of plasma stealth technique,and one of the important direction of aerospace information confrontation.The attenuation effect of electromagnetic wave in non-uniform plasma was simulated with the FDTD method,and the attenuation coefficient of C-band electromagnetic wave in a non-uniform plasma was diagnosed with the space transmission method.Then influences of plasma distribution to the attenuation effect were analyzed.Research results show that non-uniform plasma has a more obvious attenuation effect than uniform plasma,and a reasonable plasma distribution can improve this attenuation effect.
出处
《科学技术与工程》
2011年第18期4123-4127,共5页
Science Technology and Engineering
基金
中国博士后科学基金(20100471633)资助
