A hybrid method of solving near-zone composite eletromagnetic scattering from targets and underlying rough surface  

作　　者：Xi-Min Li Jing-Jing Li Qian Gao Peng-Cheng Gao 李西敏;李晶晶;高乾;高鹏程(Air Force Engineering University,Xi'an 710051,China;Air Force Communication NCO Academy,Dalian 116199,China;Science and Technology on Electromagnetic Scattering Laboratory,Shanghai 200438,China)

机构地区：[1]Air Force Engineering University,Xi'an 710051,China [2]Air Force Communication NCO Academy,Dalian 116199,China [3]Science and Technology on Electromagnetic Scattering Laboratory,Shanghai 200438,China

出　　处：《Chinese Physics B》2020年第2期282-287,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.61372033).

摘　　要：For composite electromagnetic(EM)scattering from rough surface and target above it in near-field condition,modified shooting and bouncing ray(SBR)method and integral equation method(IEM),which are analytic methods combined with two-scale model for rough surface,are proposed to solve the composite near-field scattering problems.And the modified method is verified in effectiveness and accuracy by comparing the simulation results with measured results.Finally,the composite near-fielding scattering characteristics of a slanted plane and rough water surface below are obtained by using the proposed methods,and the dynamic tendency of composite scattering characteristics versus near-fielding distance is analyzed,which may have practical contribution to engineering programs in need of radar targets near-field characteristics under extra-low-altitude conditions.For composite electromagnetic(EM) scattering from rough surface and target above it in near-field condition,modified shooting and bouncing ray(SBR) method and integral equation method(IEM),which are analytic methods combined with two-scale model for rough surface,are proposed to solve the composite near-field scattering problems.And the modified method is verified in effectiveness and accuracy by comparing the simulation results with measured results.Finally,the composite near-fielding scattering characteristics of a slanted plane and rough water surface below are obtained by using the proposed methods,and the dynamic tendency of composite scattering characteristics versus near-fielding distance is analyzed,which may have practical contribution to engineering programs in need of radar targets near-field characteristics under extra-low-altitude conditions.

关 键 词：near-field scattering ROUGH surface target in extra-low-altitude SHOOTING and bouncing ray(SBR) 

分 类 号：O441[理学—电磁学]