基于短时PRI变换的多目标分选和识别算法  

A Novel Algorithm for Multi-signal Deinterleaving and Recognition Based on Short-time PRI Transform

作　　者：奚银 夏新凡 吴迎春 刘永杰 王耀金 XI Yin;XIA Xin-fan;WU Ying-chun;LIU Yong-jie;WANG Yao-jin(Shanghai Radio Equipment Research Institute,Shanghai 201109,China)

机构地区：[1]上海无线电设备研究所,上海201109

出　　处：《制导与引信》2020年第4期27-32,共6页Guidance & Fuze

基　　金：空军预研基金(303020503)。

摘　　要：针对经典脉冲重复间隔(PRI)变换类算法和平面变换类算法无法自主获取复杂信号的实时重频变化特性的问题,在修正PRI变换算法基础上提出短时PRI变换方法。该方法结合对目标脉冲序列短时加窗和PRI变换的方法,获取了目标信号连续的重频变化信息。仿真结果表明:这种算法不仅能够高精度地估计目标PRI中心值,还能获取PRI的特征信息和调制方式,实现实时有效的多目标分选和截获。The classical pulse repetition interval(PRI)transform algorithm and the traditional plane transform technology can not acquire and describe the PRI modulation characteristics of complex signals automatically.To solve the problem,a novel short-time PRI transform algorithm is suggested based on the improved PRI transform algorithm.It combines the two methods of short-time windowing and PRI transform algorithm,to get the modulation information and changing characteristics of the target signal’s PRI.The simulation results show that the proposed algorithm is successful in deinterleaving and recognizing multi-targetas well as accurately estimating the PRI center value.Moreover,the algorithm can obtain more PRI changing characteristics.In this sense,the proposed method is a real time and effective method for multi-signal deinterleaving and interception.

关 键 词：反辐射雷达 信号分选 短时脉冲重复间隔变换 重频抖动 

分 类 号：TN971[电子电信—信号与信息处理]