一种慢时间维的密集假目标干扰主瓣匿影算法  

A Dense False-target Jamming Main-lobe Blanking Algorithm in Slow-time Dimension

作　　者：张亮 杜庆磊[1] 张昭建 王永良[1] ZHANG Liang;DU Qinglei;ZHANG Zhaojian;WANG Yongliang(Department of Early Warning Technology,Air Force Early Warning Academy,Wuhan 430019,Hubei,China;Unit 94326 of PLA,Jinan 250000,Shandong,China)

机构地区：[1]空军预警学院预警技术系,湖北武汉430019 [2]94326部队,山东济南250000

出　　处：《兵工学报》2024年第2期606-617,共12页Acta Armamentarii

基　　金：国家自然科学基金项目(61731023、62271498、62001510)。

摘　　要：受干扰机对雷达脉冲重复频率、波束扫描周期测量精度影响,密集假目标干扰在回波中的慢时间分布与目标不同。针对该差异,提出一种慢时间维的密集假目标干扰主瓣匿影(Main-Lobe Blanking,MLB)算法。该算法与副瓣匿影(Side-Lobe Blanking,SLB)具有一定相似性,区别在于SLB是利用辅助通道回波,对主通道回波沿快时间进行选通,而所提MLB算法是利用主通道内的多个脉冲重复周期回波,对各距离单元回波沿慢时间进行选通。仿真与实测数据表明,所提方法可有效抑制主瓣或副瓣进入的密集假目标干扰。For the reason of the prediction accuracy of radar pulse repetition frequency and beam scanning period,the slow-time distribution of dense false-target jamming(DFJ)in echo is not consistent with that of the target echo.Based on the difference,a DFJ main-lobe blanking(MLB)algorithm in slow-time dimension is proposed.The algorithm has some similarities with the side-lobe blanking(SLB)algorithm,and the difference is gating dimension for the echo.The SLB algorithm is to gate the main channel echo in fast-time by using the auxiliary channel echo.And the MLB algorithm is to gate each range cell echo in slow-time by using the main channel echo within multiple pulse repetition intervals.The simulated results and measured data show that the proposed algorithm can be used to effectively suppress the DFJ from the radar main lobe or side lobe.

关 键 词：雷达 密集假目标干扰 慢时间 主瓣匿影 实测数据 

分 类 号：TN957[电子电信—信号与信息处理]