基于复单脉冲比和变尺度离散变换的拖曳式诱饵干扰识别技术研究  

Research on Towed Decoy Jamming Identification Technology Based on Complex Monopulse Ratio and Variable Scale Discrete Chirp-Fourier Transform

作　　者：秦琨 赵婵娟 袁云权 陈言理 李姗姗 QIN Kun;ZHAO Chanjuan;YUAN Yunquan;CHEN Yanli;LI Shanshan(Shanghai Aerospace Electronic Technology Institute,Shanghai 201109,China;Military Representative Office of Rocket Military Equipment Department,Shanghai 201109,China)

机构地区：[1]上海航天电子技术研究所,上海201109 [2]火箭军装备部驻上海地区军事代表室,上海201109

出　　处：《空天防御》2022年第1期60-65,共6页Air & Space Defense

摘　　要：针对主动导引头或机载制导雷达面临的难以分辨拖曳式干扰的问题,对拖曳式诱饵干扰机理进行详细分析,从目标与诱饵的信号分布特性和多普勒频谱特性角度出发,利用复单脉冲比和变尺度离散Chirp-Fourier变换提出一种简单有效的拖曳式诱饵检测分辨技术,实现拖曳式诱饵和目标分离。通过计算仿真对算法的有效性进行了验证,仿真结果表明在某些特定条件下利用变尺度离散Chirp-Fourier变换的时频分析处理方法对拖曳式干扰有极强的区分能力。研究结果可为跟踪制导雷达对抗拖曳式干扰提供了研究思路。For the towed jamming indistinguishable problem of active seeker or airborne guidance radar,the towed de⁃coy jamming mechanism is analyzed in detail.From the perspective of signal distribution characteristics and Doppler spectrum characteristics of target and decoy,using complex monopulse ratio and variable scale discrete Chirp-Fourier transform,a simple and effective towed decoy detection and identification technique is proposed to separate the towed decoy from the target.The validity of the algorithm is verified by computer simulation.The simulation results show that the time-frequency analysis and processing method based on variable scale discrete Chirp-Fourier transform has strong discrimination ability against towed jamming under some special conditions.The research results provide a way for tracking and guidance radar to counter towed jamming.

关 键 词：脉冲多普勒雷达 拖曳式干扰 变尺度离散Chirp-Fourier变换 

分 类 号：TN958[电子电信—信号与信息处理]