一种弹载雷达频域抗拖曳干扰方法  

A Method on Missile-borne Radar Countering Towed Decoy Jamming in Frequency Domain

作　　者：蒋兵兵 朱剑 汪超 李盘虎 杨成杰 JIANG Bing-bing;ZHU Jian;WANG Chao;LI Pan-hu;YANG Cheng-jie(Shanghai Radio Equipment Research Institute,Shanghai 200090,China)

机构地区：[1]上海无线电设备研究所,上海200090

出　　处：《制导与引信》2018年第3期17-21,共5页Guidance & Fuze

基　　金：上海市自然科学基金项目(编号:18ZR1437300)

摘　　要：弹载雷达在目标探测中面临诸如拖曳式诱饵等干扰,为提高目标检测性能,避免弹载雷达系统锁定到拖曳式诱饵,文章提出了一种基于拟合的复调制ZFFT频域抗拖曳式干扰方法。该方法对可能存在目标频带范围细化后,获得了更高的分辨率,从而检测目标多普勒频率。再利用二次曲线拟合,提高目标多普勒频率估计精度。计算机仿真实验表明,该方法相比于传统FFT方法,能够得到更稳定的目标检测概率,更优的目标多普勒估计性能。Missile-borne radar counters jamming during target detection process, such as towed decoy. An anti-jamming method to avoid missile-borne radar focusing on towed decoy jamming is put forward, which is called complex modulated ZFFT(zoom-fast Fourier transformation) anti towed decoy jamming method in frequency domain based on fitting. After zooming frequency range where target possibly exists, a higher resolution is obtained. Therefore, the estimated precision is improved by the detected Doppler frequency with second-order curve fitting. Computer simulations and experiments demonstrate that compared with traditional FFT approach, the proposed method exhibits more stable target detection probability and better target Doppler estimation performance.

关 键 词：弹载雷达 拖曳式干扰 二次曲线拟合 

分 类 号：TN958[电子电信—信号与信息处理]