物理学报2012，Vol.61Issue(23)：193-201,9.
金属／介质涂覆的S形扩压器电磁散射特性
Electromagnetic scattering study for metal/dielectic coated inlet diffuser
摘要
Abstract
As one of strong scattering sources of planes, assessing accurately the characteristic of radar cross-section (RCS) about inlets is still hot in investigation into computational electromagnetics. An iterative physical optics method, which an impedance boundary condition and forward-backward method are added to, is studied and a box-segmentation method of blanking off is proposed. It can compute accurately the electric magnetic current distribution on the wall and the RCS. What is more, by developing a kind of software which can be verified by the relevant examples, the RCS characteristic of any metal or dielectric cavity can be evaluated. On this basis, using the software, the numerical simulation about the metal/coated medium S-diffuser with rectangular shape is carried out, and the RCS variational regulation of diffuser under an incident wave length in 0.03 m is obtained. The improved iterative physical optics method is applicable to the design of any cavity and the study of coating absorbing materials, therefore the design cycle is shortened.关键词
S弯扩压器/电磁散射/迭代物理光学法/阻抗边界条件Key words
S diffuser/electromagnetic scattering/iterative physical optics/impedance boundary conditions分类
信息技术与安全科学引用本文复制引用
王龙,钟易成,张堃元..金属／介质涂覆的S形扩压器电磁散射特性[J].物理学报,2012,61(23):193-201,9.基金项目
成都飞机设计所联合基金资助的课题. （）
