抗间歇采样转发干扰的发射波形与失配滤波器联合优化算法  

A joint optimization algorithm for transmitting waveform and mismatched filter against interrupted sampling repeater jamming

作　　者：刘茜 戴奉周 LIU Qian;DAI Fengzhou(School of Electronic Engineering,Xidian University,Xi’an 710071,China)

机构地区：[1]西安电子科技大学电子工程学院,陕西西安710071

出　　处：《系统工程与电子技术》2024年第6期1855-1866,共12页Systems Engineering and Electronics

摘　　要：间歇采样转发干扰(interrupted sampling repeater jamming,ISRJ)与发射信号之间具有强相关性,若在接收端采用匹配滤波处理则会产生多个数量可控的高逼真假目标,对雷达的检测性能具有极大的干扰。针对上述问题,提出了一种抗ISRJ的发射波形和接收滤波器联合优化算法,将失配滤波体制下的信噪比(signal to noise ratio,SNR)损失、发射信号恒模约束以及滤波器能量约束考虑在内,以最小化干扰信号归一化脉压后峰值、失配滤波输出信号积分副主比以及输出干信比,并采用主分量最小化(majorization-minimization,MM)方法与平方迭代加速算法提高算法运行速度。仿真结果表明,与其他同类方法相比,所提算法能在保证可靠抗干扰性能的同时,极大缩短运行时间,具有较好的实时性。Interrupted sampling repeater jamming(ISRJ)has a strong correlation with the transmitting signal,if the matched filtering processing is still adopted at the receiving end,multiple high-fidelity false targets with controllable quantity will be generated,which seriously affects the detection performance of radar.To solve the above problem,a joint optimization algorithm for transmitting waveform and receiving filter against the ISRJ is proposed,which takes into account the signal to noise ratio(SNR)loss under the mismatched filtering system,the constant modulus constraint of transmitting signal and the energy constraint of filter,to minimize the normalized peak of the interference signal after pulse compression,the ratio of the energy of the integral side lobe to main lobe and the interference to signal ratio of the output of the mismatched filter,the majorization-minimization(MM)method and the square iterative acceleration algorithm are adopted to accelerate the running speed of the proposed algorithm.The simulation results show that compared with other similar methods,the proposed algorithm can greatly shorten the running time and has better real-time performance on the basis of ensuring reliable anti-interference performance.

关 键 词：间歇采样转发干扰 失配滤波 主分量最小化 平方迭代方法 恒模约束 

分 类 号：TN974[电子电信—信号与信息处理]