摘要
目标总散射场往往包含多种不同的散射机理,分解不同的散射机理,对于复杂目标电磁散射认知、特征和目标识别及散射特性控制具有重要意义。基于不同散射机理回波到达接收机具有时隙差这一物理基础,实现了镜面散射、多次散射等散射机理的分解。最后给出了多个模型的仿真实例,在其时频分析结果、雷达成像和雷达散射截面对比结果中,可以清楚地观察到不同散射机理得到了有效的分解,验证了本文方法的可行性和正确性。
The target total scattering field often contains many different scattering mechanisms.Decomposing different scattering mechanisms will improve the knowledge of electromagnetic scattering for complex targets,and will be of great significance for feature recognition and scattering characteristics control.In this paper,the different scattering mechanisms such as specular scattering and multiple scattering are decomposed based on the physical basis of the arrival of the echoes of the different scattering mechanisms.Finally,several examples are given.From the time-frequency analysis results,radar imaging and radar cross section comparison results,it can be clearly observed that different scattering mechanisms are effectively decomposed,which proves the feasibility and correctness of the proposed method.
作者
李建周
刘祥威
LI Jianzhou;LIU Xiangwei(School of Electronics and Information,Northwestern Polytechnical University,Xian 710129,China)
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2020年第3期513-520,共8页
Systems Engineering and Electronics
基金
陕西省重点研发计划国际科技合作项目(2017KW-007)
2017年度CALT Foundation基金资助课题
关键词
散射机理分解
时隙差
时频分析
目标识别
scattering mechanism decomposition
time slot difference
time-frequency analysis
target recognition
