电波科学学报2019，Vol.34Issue(1)：104-110,7.DOI:10.13443/j.cjors.2018072601
谐振区目标散射特性与曲面绕射机理的研究
Scattering characteristics of targets in resonant region and diffraction mechanism of curved surface
摘要
Abstract
Aiming at the scattering model of the target in the resonance region, two improved methods for applying the high frequency method to the resonance region are proposed to solve the problem that the accuracy of the high frequency method is reduced in the resonance region. In the resonance region, along with the frequency and the reduction of the target electrical size, the high-frequency series solution in the expression requires more summation terms to make the series converge, in addition to the influence of high-order creeping waves on the scattering field. On the basis of analyzing the scattering characteristics and scattering mechanism of the resonance region, the hybrid geometric optics-physical optical algorithm is combined with the uniform geometric diffraction theory, and the expression of the creeping wave attenuation with the creeping distance is derived, and the metal sphere and 2-D cylinder are calculated. The scattering field summarizes some scattering characteristics of the resonance region target.关键词
谐振区/散射模型/级数收敛/爬行波/物理光学/一致性几何绕射理论Key words
resonance region/scattering models/series convergence/creeping waves/PO/UTD分类
数理科学引用本文复制引用
黄起,何思远,林海,朱国强,张云华,王瑞..谐振区目标散射特性与曲面绕射机理的研究[J].电波科学学报,2019,34(1):104-110,7.基金项目
国家自然科学基金 (61571333, 61301061) （61571333, 61301061）
