摘要
对导弹的结构进行简化,建立了导弹的电磁散射模型,通过综合运用物理光学法(PO)、等效电磁流法(MEC)、几何光学法(GO)等高频方法计算了导弹模型各散射中心的雷达散射截面积(RCS),并考虑目标各部分散射场间的相对相位关系,计算了带橄榄型弹头导弹的整体RCS,其结果与参考文献的实测结果吻合较好,这说明该文的分析方法是正确的、有效的,结果可满足工程预估的需要。在此基础上,分别计算了不同极化方式下带椭球型和半球型弹头导弹的RCS,结合RCS曲线分析了弹头形状对导弹电磁散射特性的影响。
The missile configuration is simplified and the electromagnetic scattering model of missile is built in this paper. High-frequency techniques, including physical optics（PO）, method of equivalent currents （MEC）, and geometrical optics（GO）, were used to calculate the radar cross section（RCS） of various scattering-centers of this model. Total RCS of the missile with olive-shape warhead was calculated considering the phase contributions of scattering-centers. The results are in accordance with the measured results given by references. It is showed that the method is effective and can satisfy the analysis need for the RCS predication of missile. Then, the missile＇s RCS with ellipsoid-shape and hemisphere-shape warheads under different polarization modes were reckoned. Based on the curve of RCS, the effects of different shapes of warheads on missile＇s electromagnetic scattering characteristics are analyzed.
出处
《雷达科学与技术》
2008年第2期102-107,共6页
Radar Science and Technology
关键词
导弹
雷达散射截面积
几何光学法
物理光学法
等效电磁流法
missile
radar cross section（RCS）
geometrical optics（GO）
physical optics（PO）
method of equivalent currents（MEC）
