基于微动特性的单根箔条回波信号时频特性  

Time-frequency method of single chaff echo signal based on micro-motion characteristics

作　　者：王哲 江舸[1] 经文 蔡英武[1] WANG Zhe;JIANG Ge;JING Wen;CAI Yingwu(Institute of Electronic Engineering,China Academy of Engineering Physics,Mianyang Sichuan 621999,China)

机构地区：[1]中国工程物理研究院电子工程研究所

出　　处：《太赫兹科学与电子信息学报》2020年第1期30-35,49,共7页Journal of Terahertz Science and Electronic Information Technology

基　　金：重点基金资助项目(61406190101)

摘　　要：针对箔条微动对回波信号调制的问题,提出一种单根箔条回波构建方法。首先建立单根箔条的典型微动模式的运动学方程,然后基于散射中心对该微动模式下的单根箔条回波进行仿真,最后通过时频方法对单根箔条回波信号的微动变化规律进行分析。仿真结果表明,建立的单根箔条微动模型能够有效地反映箔条回波信号的微动特性,为精确建立箔条云回波模型提供了技术支撑,并为有效识别箔条干扰、改善雷达性能提供了理论依据。For the problem of chaff micro-motion on echo signal modulation,a single chaff echo construction method is proposed.Firstly the kinematic equation of a typical micro-motion mode of single chaff is established.Then,the single chaff echo in the micro-motion mode is simulated based on the scattering center,and finally the law of the micro-motion change of the chaff echo signal is analyzed by the time-frequency method.The simulation results show that the single chaff micro-motion model established in this paper can effectively reflect the micro-motion characteristics of the chaff echo signal,provide technical support for accurate establishing of the chaff cloud echo model,and provide theoretical basis for effectiveness of chaff jamming recognition and improvement of radar performance.

关 键 词：单根箔条 回波信号 时频方法 微动特性 

分 类 号：TN972.41[电子电信—信号与信息处理]