复杂环境下运动目标多角度宽带散射计算  

Multi-angle and wideband calculation of scattering from moving target in complex environment

作　　者：张平娟[1,2] 李民权[2] 周敏[2] 秦坤[2] 

机构地区：[1]安徽科技学院数理与信息工程学院,安徽凤阳233100 [2]安徽大学计算智能与信号处理教育部重点实验室,安徽合肥230039

出　　处：《合肥工业大学学报（自然科学版）》2014年第2期200-203,共4页Journal of Hefei University of Technology：Natural Science

基　　金：安徽省自然科学基金资助项目(1208085MF104);安徽省教育厅自然科学基金资助项目(KJ2011A007);安徽大学研究生学术创新研究资助项目(yqh100180)

摘　　要：复杂环境背景下,运动目标的电磁散射特性计算是一个困难却具有实际价值的研究课题,且研究较少。现有算法存在处理繁琐、计算量大的问题。文章基于时域有限差分方法,通过引入谱方法和运动相对边界条件,经过少量计算便可获得波源在多个角度入射下,处于复杂粗糙面环境中的运动目标宽带电磁散射特性。数值计算结果证明了该方法的有效性和高效性。The calculation of electromagnetic scattering from moving target in complex environment is a difficult research topic with the actual value .The relevant research on it is less at present ,and the existing algorithms have the problems such as cumbersome operating and heavy computation .In this paper ,based on the finite difference time domain method ,the wideband electromagnetic scattering characteristics from moving target in complex rough environment under the multi-angle incidence of the wave source are obtained after few calcula-tions by introducing spectral method and the movement relative boundary condition .The results of numerical calculation prove that the algorithm is effective and efficient .

关 键 词：谱方法 运动目标 粗糙面环境 多角度入射 宽带 

分 类 号：O441.4[理学—电磁学]