半空间复杂目标的高频分析方法  

High-Frequency Analysis on Scattering from Complex Conductive Targets in Half Space

作　　者：李晓峰[1] 谢拥军[1] 陈博韬[1] 樊君[1] 

机构地区：[1]天线与微波技术国家重点实验室西安电子科技大学,西安710071

出　　处：《电子与信息学报》2010年第2期449-453,共5页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(60771040)资助项目

摘　　要：该文研究了半空间内复杂导体目标散射的高频求解方法。分析半空间电磁波的传播规律,将半空间并矢格林函数引入传统的物理光学方法,等效电磁流法方法中,推导出半空间物理光学算法、半空间等效电磁流算法,同时结合图形电磁学和射线追踪方法,分别对半空间复杂目标的消隐和多重散射进行考虑,与半空间目标面元、棱边散射场相叠加,快速有效地计算了半空间复杂目标的雷达散射截面。数值结果证明了方法的有效性和准确性。The high-frequency method for solving the scattering from electrically large conductive targets in half space is presented in this paper. The High-frequency method is deduced by introducing the half-space Green＇s function into the conventional method of physical optics, method of equivalent currents. Combined with the graphical-electromagnetic computing method and ray tracing technique that account for shadowing, multiple scattering in half space, one may calculate the radar cross-section of a conductive targets object in a half space. The numerical results show that this method is efficient and accurate.

关 键 词：图形电磁学 半空间格林函数 半空间物理光学方法 雷达散射截面 

分 类 号：O441[理学—电磁学]