太赫兹波在非均匀等离子体鞘套中的传播特性  

Properties of Terahertz Wave Propagation in Inhomogeneous Plasma Sheath

作　　者：蒋金[1] 陈长兴[1] 汪成[2] 陈婷 周天翔[1] 凌云飞[1] 

机构地区：[1]空军工程大学理学院,西安710051 [2]河海大学计算机与信息学院,南京211100 [3]西安邮电大学电子工程学院,西安710121

出　　处：《系统仿真学报》2015年第12期3109-3115,共7页Journal of System Simulation

基　　金：陕西省自然科学基础研究计划项目(2014JM8344);空军工程大学研究生创新基金资助项目(LXY2015YJS06)

摘　　要：针对高超声速飞行器在临近空间巡航时出现的通信"黑障"问题,根据NASA开展的无线电衰减测量C(RAM C III)飞行试验数据,把临近空间分成两个空间层构建数学模型,建立了2个一维非均匀等离子体鞘套模型,通过数值计算分析了等离子体与太赫兹波的相互作用机理,得到了太赫兹波在非均匀等离子体鞘套中传输特性曲线。仿真结果表明:把太赫兹波段作为临近空间平台通信,有利于解决黑障问题。此论证结果,可为设计临近空间高超声速飞行器选用通信频段时提供参考。The communication blackout usually happens when the hypersonic vehicles voyage in the near space. According to the data provided by radio attenuation measurement C(RAM C) voyage experiment, two models of inhomogeneous plasma sheath were established after dividing the near space into two spatial layers to build two mathematical models. The principle of interaction between plasma and terahertz wave was analyzed through numerical calculation, getting the properties of terahertz wave propagation in plasma sheath. The simulation shows that the terahertz wave frequency band selected as communication frequency band used in near space can solve the problem of communication blackout. The result of simulation can be provision of reference for design of communication frequency-band used in the near space hypersonic vehicles.

关 键 词：等离子体鞘套 太赫兹波 临近空间 高超声速飞行器 

分 类 号：TN011[电子电信—物理电子学] V520[航空宇航科学与技术—人机与环境工程]