摘要
从Stratton-Chu积分方程入手,推导出一种光滑凸体金属表面涂覆雷达吸波材料(RAM)的物理光学后向RCS计算公式,同时考虑边缘绕射的贡献,介质劈与金属劈的电磁散射特性是不同的,须通过等效电磁流法(EEC)来求解介质边缘散射加以修正。通过对涂覆平板、涂覆柱锥组合体及某导弹目标RCS的计算,再与实测值和矩量法结果对比,它们均相吻合,从而验证了算法的有效性和准确性。本算法特别适合大尺寸目标RCS计算。
On the basis of Stratton-Chu equation,the method gives simple physical optics equation that calculate the RCS of the convex coated metal surface,and considering wedges scattering field,electromagnetic scattering characteristic of wedge with dielectric coating and conducting wedge are different,the wedge with dielectric coating scattering field is resolved by using Edge Equivalent Currnet(EEC),the radar cross-section(RCS) of typical target such as metal plate coated with RAM,combined cone-cylinder coated with RAM and a missile coated with RAM are calculated,the calculated results are consistent with the result from measurement and MOM,which verity effectivity and accuracy of the method.This method is specially effective to compute RCS of large electric size targets.
出处
《微波学报》
CSCD
北大核心
2010年第S2期40-43,共4页
Journal of Microwaves
关键词
雷达吸波材料
雷达散射截面
电磁散射
物理光学
仿真
Radar absorption material
Radar cross-section
Electromagnetic wave scattering
Physical optics
Simulating
