不同入射角度下等离子鞘套中C波段电磁波传输特性  

Properties of C-band Wave Propagation in Plasma Sheath with Different Incidence Angle

作　　者：凌云飞[1] 陈长兴[1] 蒋金[1] LING Yunfei CHEN Changxing JIANG Jin(Science College, Air Force Engineering University, Xi ＇ an 710051)

机构地区：[1]空军工程大学理学院,西安710051

出　　处：《空间科学学报》2016年第6期904-908,共5页Chinese Journal of Space Science

基　　金：陕西省自然科学计划项目资助(2014JM8344)

摘　　要：为解决临近空间通信黑障问题,研究了不同入射角对等离子体鞘套中C波段（4~8 GHz）电磁波传输特性的影响,分别采用均匀等离子体模型与高斯分布非均匀等离子体模型,根据电磁波在分层介质面的反射和透射传播原理,对不同角度下C波段通信电磁波的传输性能进行计算和对比分析.结果表明,入射波频率的增加以及入射角的减小有利于降低C波段的衰减值,提高透射率,使通信电磁波更有效地穿透等离子体鞘套,为解决临近空间通信黑障问题提供了理论依据.In order to solve the problem of communication blackout in near space,the influence of different incident angles on the electromagnetic wave propagation characteristics of C-wave band（4~8 GHz） in plasma sheath is studied.The transmission performance of C-band electromagnetic wave are calculated and compared by using the numerical method with a uniform plasma model and a Gaussian distributed plasma model,respectively.Analysis results show that the increase of the incident wave frequency and the decrease of incidence angle are beneficial to reduce the attenuation value of the C-band,and to increase the transmissivity,which makes the communication electromagnetic wave more effectively in penetrating the plasma sheath.The conclusion provides a theoretical basis for solving the problem of communication blackout in near space.

关 键 词：C波段 入射角度 等离子体鞘套 衰减 

分 类 号：V419.2[航空宇航科学与技术—航空宇航推进理论与工程] V443.1