基于FDTD方法的复杂目标RCS数值计算  

Numerical Calculation of Complex Object RCS Based on FDTD Method

作　　者：许鑫[1] 朱安石[1] 杨勇 蔚建斌[1] 

机构地区：[1]军械工程学院,河北石家庄050003 [2]轻武器研究所,北京102202

出　　处：《无线电工程》2015年第7期62-66,90,共6页Radio Engineering

基　　金：国防预研基金项目

摘　　要：针对应用时域有限差分法数值计算复杂目标雷达散射截面(Radar Cross Section,RCS)难的问题,基于AutoCAD开发环境,应用Auto LISP编程语言进行了二次开发,建立散射体几何—电磁参数描述文件,时域有限差分法(FDTD)通过调用该文件可以数值计算复杂目标RCS。为了验证该方法的正确性,以经典的三维实心球体为例,建立了三维实心球的几何—电磁参数描述文件,通过FDTD方法计算了三维实心球的RCS,将计算结果与经典文献中的结果进行了对比,证明了该方法的正确性。It is difficult to calculate the RCS of complex object by using the FDTD method. To solve this problem,the Auto LISP programming language embedded in Auto CAD is applied. Based on this language,the geometry and electromagnetic parameters document of scatter can be established. By transferring this document,the RCS of complex object can be calculated by FDTD approach. To validate the correctness of this method,the 3D solid sphere is taken as an example. The geometry and electromagnetic parameters document of this sphere is obtained. Also,the RCS of this sphere is calculated by using FDTD approach. In order to validate the results,this paper compares the results in classical literatures with them. Results show that the results in this paper are correct.

关 键 词：时域有限差分法 雷达散射截面 复杂目标 AUTOCAD 

分 类 号：O44[理学—电磁学]