基于LFM波形的灵巧干扰效能分析

针对电子对抗作战中普通干扰信号难以对脉冲压缩雷达产生有效干扰问题,提出了一种基于线性调频波形的灵巧干扰信号.依据线性调频波形设计原理,在对波形信号进行间歇采样转发后,建立了灵巧干扰的干扰信号.通过设置间歇采样占空比0.2和0.5,仿真得到了不同占空比下灵巧干扰在时域和频域的幅度分布情况,并经过匹配滤波输出,进一步获得了灵巧干扰分别在压制干扰时和欺骗干扰时的时频联合分布结果.仿真结果表明:间歇采样占空比较大时体现欺骗干扰效能,占空比较小时体现压制干扰效能,即灵巧干扰通过匹配雷达波形具有较强的干扰灵活性和针对性.

Analysis on Smart Jamming Effectiveness Based on Linear Frequency Modulation Waveform

In order to solve the problem that the simple jamming signal can not interfere the pulse compression radar effectively,a smart jamming signal based on the linear frequency modulation (LFM) waveform is proposed.According to the design principle of LFM waveform,the jamming signal of smart jamming was established after intermittently sampling and transmitting the wave form signal.The time frequency distribution of smart jamming under different duty ratio was simulated and compared by setting the intermittent sampling duty ratio to 0.2 and 0.5 respectively,and the results of time frequency joint distribution of smart jamming were further obtained when being in oppression jamming and deception jamming condition respectively.The simulation results show that deception jamming effectiveness will be appeared when duty ratio is larger and oppression jamming effectiveness will be appeared when duty ratio is smaller.That is,the smart jamming will have strong flexibility and pertinence by matching the radar waveform.