一种基于GRECO的复杂目标棱边建模方法  

Modeling Method for Complex Target Edge Based on GRECO

作　　者：沈思瀚[1] 潘明海[1] 王龙[1] 

机构地区：[1]雷达成像与微波光子技术教育部重点实验室(南京航空航天大学),南京210016

出　　处：《微波学报》2015年第3期17-21,共5页Journal of Microwaves

基　　金：国家自然科学基金资助项目(61071164;61271327);江苏高校优势学科建设工程资助项目

摘　　要：针对复杂目标高频电磁散射,利用CAD商业建模软件,结合PO、MEC算法实现目标RCS计算。对于边缘绕射计算,提出了一种新的建模方法,提高了计算速度。计算结果与数值方法 MLFMM计算结果吻合很好。最后以某战斗机模型为例,实现目标角度域、频域RCS计算,并且研究了RCS数据在目标高分辨率距离像中的应用。实验结果表明,该方法对复杂目标高频电磁散射RCS仿真计算具有一定参考价值。In view of the complex target in high frequency electromagnetic scattering,by using the commercial CAD modeling software,the goal of the RCS calculation combined with PO,MEC algorithm is achieved. For the target edge diffraction calculation,a new modeling method is presented,which improves the computational efficiency. The computing results are in close agreement with the results of multilevel fast multipole method( MLFMM). Finally with a fighter model as an example,the goal of angle domain,frequency domain RCS calculation is achieved,and the application of RCS data in the target high resolution range profile is studied. Experimental results show that,this modeling method has some reference value for high-frequency electromagnetic scattering of complex targets RCS simulation.

关 键 词：图形电磁计算方法 边缘绕射 等效电磁流法 高分辨率距离像 

分 类 号：O436[机械工程—光学工程]