纳秒级脉冲照射下隐身飞行器的隐身效果分析  

Analysis of Stealthy Effect for the Stealth Aircraft under ns Pulse Irradiation

作　　者：李毅[1] 张伟军[2] 张伟[2] 袁乃昌[2] 

机构地区：[1]海军工程大学电力电子技术研究所,武汉430033 [2]国防科技大学微波中心,长沙410073

出　　处：《宇航学报》2007年第6期1678-1682,共5页Journal of Astronautics

基　　金：国家863计划资助项目(2005AA8350040)

摘　　要：为研究冲激雷达的反隐身潜力,首先用时域有限差分方法(FDTD)和解析方法计算了电磁波垂直入射时涂敷窄带雷达吸波材料(RAM)和涂敷等离子体的金属平板的反射率,然后用FDTD仿真了在纳秒级双高斯脉冲照射下某金属缩比隐身飞机模型,及其涂敷窄带RAM及涂敷等离子体的散射特性。结果表明,在低频区外形隐身的隐身效果不明显,RAM和等离子体的吸波效果较差。这证实了发射纳秒级脉冲信号的冲激雷达具有反隐身的潜力。To study the anti-stealth ability of a pulse radar,firstly the reflectivities of a metal plate coated with a narrow-band radar absorbing material(RAM) and with the plasma,when an plane wave propagated in the normal direction of the plate,were calculated by the finite-difference time-domain(FDTD) method and the analytical method.Secondly the electromagnetic characteristics of one scale metal stealth airplane,the airplane coated with the narrow-band RAM and with the plasma,when incident wave was a double gaus...

关 键 词：时域有限差分方法 雷达吸波材料 等离子体 脉冲 

分 类 号：V218[航空宇航科学与技术—航空宇航推进理论与工程]