典型隐身飞机缩比模型的瞬态散射仿真与实验  

Simulation and Experimentation for Transient Scattering of the Representative Stealth Aircraft

作　　者：李毅[1] 张光甫[1] 莫锦军[1] 袁乃昌[1] 

机构地区：[1]国防科技大学微波技术发展中心,长沙410073

出　　处：《微波学报》2007年第3期1-4,共4页Journal of Microwaves

基　　金：国家高技术863计划(2005AA8350040)

摘　　要：用时域有限差分方法计算了某典型隐身飞机缩比金属模型涂敷与未涂敷吸波材料的瞬态散射,并通过暗室测量及外场实验得到了缩比模型的脉冲回波。结果表明:在低频区,外形隐身和吸波材料隐身效果不明显,也证实了窄脉冲信号能发现和识别隐身目标。The transient scattering characteristics of the scale model with radar absorbing material （RAM） and without RAM of a representative stealth airplane are calculated by finite-difference time-domain method. And the echoes of impulse signals of the scale model are obtained by measurement in the indoor room and experimentation in the outdoor-room. The results indicate that the profile stealth technology and RAM stealth technology perform badly in low frequency, and the short impulse signals can detect and discriminate the stealth objects.

关 键 词：时域有限差分方法 瞬态散射 吸波材料 冲激脉冲 

分 类 号：V218[航空宇航科学与技术—航空宇航推进理论与工程]