抗速度欺骗干扰的雷达发射波形与接收滤波器联合设计方法  

Joint radar transmitted waveform and received filter design approach against velocity deception jamming

作　　者：张明兴 时巧 余涛 周正春 崔国龙 ZHANG Mingxing;SHI Qiao;YU Tao;ZHOU Zhengchun;CUI Guolong(School of Information Science and Technology,Southwest Jiaotong University,Chengdu 610031,China;School of Mathematics,Southwest Jiaotong University,Chengdu 610031,China;School of Information and Communication Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China)

机构地区：[1]西南交通大学信息科学与技术学院,四川成都610031 [2]西南交通大学数学学院,四川成都610031 [3]电子科技大学信息与通信工程学院,四川成都611731

出　　处：《系统工程与电子技术》2024年第8期2581-2591,共11页Systems Engineering and Electronics

摘　　要：作为一种经典的有源干扰,速度欺骗干扰极易导致雷达在多普勒维上同时检测到单个或多个虚假目标,造成雷达虚警,给雷达探测带来了巨大挑战。为了抵抗速度欺骗干扰,结合脉内、脉间编码和接收滤波器设计等多个自由度,提出一种发射与接收多维联合设计的方法。首先,以非匹配滤波器峰值损失为惩罚项,并联合接收信号的多普勒谱上目标旁瓣能量与干扰能量构建优化目标函数,同时考虑发射波形峰均功率比约束。然后,基于坐标下降思想和优化最小化理论,提出一种块坐标下降的优化最小化方法求解该问题。最后,仿真实验表明相比传统脉间初相设计,在频谱阻带内,所提方法峰值旁瓣比提升约6 dB,抗速度欺骗干扰性能大幅提升。As a typical active jamming,velocity deception jamming can cause radar to detect single or multiple false targets in Doppler dimension at the same time,resulting in false alarm and posing a huge challenge to radar detection.A joint radar transmitted waveform and mismatched filter design method focus on suppressing the velocity deception jamming is proposed,which comprehensively considers many degrees of freedom such as intra-pulse,inter-pulse coding and receiver filter.Firstly,the peak loss of unmatched filter is taken as the penalty term,and the optimization objective function is constructed by combining the target sidelobe energy and interference energy on the Doppler spectrum of the received signal,and the peak-to-average power ratio constraint of the transmitted waveform is considered.Secondly,the block coordinate descent majorization-minimization method is proposed to solve this problem,based on the coordinate descent method and majorization-minimization theory.Finally,the simulation results show that compared with the traditional pulse to pulse initial phase design,the against velocity deception jamming performance of the proposed method is greatly improved,specifically,the peak sidelobe ratio is increased by about 6 dB in the special stopband.

关 键 词：波形设计 干扰抑制 速度欺骗干扰 非匹配滤波器 

分 类 号：TN974[电子电信—信号与信息处理]