一种脉组捷变频雷达目标检测方法  

A Target Detection Method for Pulse-Group Frequency Agile Radar

作　　者：剡熠琛 徐保庆 李雅梅[1] 林相 鲁佳 SHAN Yichen;XU Baoqing;LI Yamei;LIN Xiang;LU Jia(Xi'an Electronic Engineering Research Institute,Xi'an 710100;China Wanbao Engineering Co.,Ltd.,Beijing 100052)

机构地区：[1]西安电子工程研究所,西安710100 [2]中国万宝工程有限公司,北京100052

出　　处：《火控雷达技术》2024年第2期26-31,共6页Fire Control Radar Technology

摘　　要：脉组捷变频雷达不同脉组之间信号不相关,且信噪比起伏严重,为目标检测带来很大难度。鉴于此,提出了一种脉组捷变频雷达目标检测方法,首先通过快起伏信号积累损失曲线来确定最优的捷变频脉组个数及各脉组内部的脉冲个数;其次根据不同脉组杂波谱宽的变化设计与之匹配的MTD滤波器,对各脉组进行脉冲压缩及MTD处理;最后通过将多普勒域和速度域之间的映射关系将捷变频各脉组相同速度通道的数据进行积累,完成后续目标检测。仿真实验表明,该方法在兼顾杂波抑制的同时还可以提高雷达的检测性能,具有一定的优越性。The signals in different pulse groups of a pulse-group frequency agile radar are not coherent,and the radar s SNR fluctuates dramatically,which bring great difficulty to target detection.In this paper,a target detection method is proposed for pulse-group frequency agile radar.First,the optimal number of frequency agile pulse groups and the number of pulses within each pulse group are determined according to a fast fluctuating signal accumulation loss curve.Secondly,MTD filters are designed to match the change in clutter spectrum widths of different pulse groups.Then,pulse compression and MTD processing are performed for each pulse group.Finally,the data of the channels with the same velocity in each pulse group is accumulated according to the mapping relationship between Doppler domain and velocity domain for subsequent target detection.The simulation results show that the proposed method has some advantages because it can improve radar detection performance while keeping clutter suppression capability.

关 键 词：脉组捷变频 快起伏 非相参积累 积累损失 杂波抑制 

分 类 号：TN95[电子电信—信号与信息处理]