物理学报Issue(16)：1-7,7.DOI:10.7498/aps.63.164202
应用改进的物理光学法和图形计算电磁学近似算法快速计算导体目标电磁散射特性
Fast computation of electromagnetic scattering characteristics from conducting targets using mo dified-physical optics and graphical electromagnetic computing
朱艳菊 1江月松 1张崇辉 1辛灿伟1
作者信息
- 1. 北京航空航天大学电子信息工程学院，北京 100191
- 折叠
摘要
Abstract
A novel high-frequency radar cross section prediction method is introduced to solve the scattering from electrically large conductive target. It can be realized by combining a modified-vector physical optics algorithm and a graphical electromagnetic computing algorithm. In consideration of the traditional physical optics algorithm which needs to compute the edge diffraction, the radar cross section of the target cannot be calculated directly, but it is needed to first calculate the diffraction contribution, then to add the scattering contribution, therefore the radar cross section of the target can be finally obtained. By using the improved graphical electromagnetic computing, the surface normals, thus the surface current, can be directly corrected. Therefore the diffraction at the edges is taken into account, thereby improving the efficiency of the algorithm. The central processing unit running time involves only the time needed to compute the electromagnetic part, with leaving the geometric part to the graphics hardware. The line integrals are computed over an arbitrary shape in real time. Numerical results demonstrate the good accuracy and efficiency of the modified method.关键词
改进的物理光学法/物理光学法/图形计算电磁学/电磁散射Key words
modified-vector physical optics algorithm/physical optics algorithm/graphical electromag-netic computing/electromagnetic scattering引用本文复制引用
朱艳菊,江月松,张崇辉,辛灿伟..应用改进的物理光学法和图形计算电磁学近似算法快速计算导体目标电磁散射特性[J].物理学报,2014,(16):1-7,7.
