雷达目标的散射中心建模研究  

Research on scattering center modeling for radar target

作　　者：郭琨毅[1] 殷红成 盛新庆[1] GUO Kunyi;YIN Hongcheng;SHENG Xinqing(School of Information and Electronics,Institute of applied electromagnetics,Beijing Institute of Technology,Beijing 100081,China;Science and Technology on Electromagnetic Scattering Laboratory,Beijing 100854,China)

机构地区：[1]北京理工大学信息与电子学院应用电磁研究所,北京100081 [2]电磁散射国家级重点实验室,北京100854

出　　处：《电波科学学报》2020年第1期106-115,共10页Chinese Journal of Radio Science

基　　金：科技部重点研究开发计划(2017YFB0202500);国家自然科学基金(61771052)。

摘　　要：雷达目标总散射场可近似为若干散射中心贡献的叠加,而每一个散射中心都对应着特定的电磁散射机理,这些特定散射机理的散射场可表示成输入为雷达参数(频率、极化、视向角)和目标参数(几何、材料)的参数化模型.散射中心参数化模型在雷达回波实时模拟、半实物仿真、雷达目标识别等领域得到了广泛的关注.文中总结了雷达散射中心模型的发展历程,包括散射中心数学模型和散射中心参数提取方法,以及散射中心建模的难点问题和未来的研究方向.期望该文可为从事该方面研究的科研人员提供一些参考.The total scattering field of a radar target can be approximated as the superposition of the scattering contributions from scattering centers(SC). Each of types of SCs corresponds to a specific scattering mechanism,and the scattering field of a specific scattering mechanism can be expressed as a parameterized model with input as radar parameters(frequency, polarization, aspect angle) and target parameters(geometry, material). SC model has been paid much attention in real time simulation of radar echo, semi-physical simulation and radar target recognition. This paper summarizes the development of the SC models, the extracting methods of parameters in SC models, the difficult problems in SC modeling and the future hot-topics. It is expected that this paper can provide a reference for researchers engaged in this field.

关 键 词：散射机理 散射中心模型 时频变换 雷达成像 

分 类 号：TN957.2[电子电信—信号与信息处理]