一种针对LFM雷达的非均匀间歇采样干扰样式  

A non-uniform interrupted-sampling jamming mode for LFM radar

作　　者：李惠东 赵忠凯[1] LI Huidong;ZHAO Zhongkai(College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《应用科技》2020年第3期37-40,45,共5页Applied Science and Technology

摘　　要：利用非均匀间歇采样脉冲宽度和采样脉冲周期不固定的特点,研究了基于非均匀间歇采样的干扰样式的干扰效果。分析了均匀间歇采样与非均匀间歇采样2种干扰样式的干扰效果以及灵巧噪声干扰在均匀间歇采样方式下对线性调频(LFM)信号的干扰效果。通过分析可知:均匀间歇采样干扰仅具有欺骗效果,而非均匀间歇采样干扰不仅具有欺骗效果,还具有一定的压制效果;灵巧噪声干扰在均匀间歇采样方式下的信号幅度参差不齐,峰均比较高,而非均匀间歇采样干扰信号为恒包络信号,峰均比较低。MATLAB仿真结果表明,基于非均匀间歇采样的干扰样式与均匀间歇采样方式相比,可以实现更好地干扰效果,验证了理论分析的正确性,具有一定的工程价值。Based on the characteristics of non-uniform interrupted-sampling pulse width and unfixed periodicity,the interference effect of non-uniform interrupted-sampling interference mode is studied and analyzed.The analysis focμses on the jamming effects of uniform interrupted-sampling and non-uniform interrupted-sampling and the jamming effects of smart noise jamming on linear frequency modulation(LFM)signals under uniform interrupted-sampling.The analysis shows that the uniform interrupted-sampling jamming only has deception effect,while the non-uniform interruptedsampling jamming not only has deception effect,but also has certain suppression effect.The signal amplitude of smart noise interference in uniform interrupted-sampling mode is uneven,and the peak-to-average ratio is high,while the signal of non-uniform interrupted-sampling interference is constant envelope signal with lower peak-to-average ratio.Simulation results of MATLAB show that the interference mode based on non-uniform interrupted-sampling can achieve better interference effect than that based on uniform interrupted-sampling,which verifies the correctness of theoretical analysis and has certain engineering value.

关 键 词：线性调频雷达 雷达干扰 欺骗干扰 压制干扰 非均匀间歇采样 间歇采样干扰 灵巧噪声干扰 峰均比 

分 类 号：TN953[电子电信—信号与信息处理]