基于示样储频的自适应瞄频噪声干扰设计

传统瞄频噪声干扰在单一时刻仅能干扰一个雷达工作频点。针对在无瞬时测频引导条件下,传统瞄频噪声干扰对频率捷变、自适应跳频等雷达干扰能力受限的问题,文中提出了一种基于示样脉冲数字储频的自适应瞄频噪声干扰,利用示样脉冲存储截获雷达信号前沿样本,运用窄带噪声对截获的雷达起始频率样本进行时域“乘积冶调制,在不测频条件下,实现收发分时体制干扰机对脉间频率捷变雷达及自适应跳频雷达的自动瞄频干扰,数字仿真结果证明了干扰的有效性。

A Study of Adaptive Frequency Spot Noise Jamming Based on Sample Pulse DRFM

Traditional frequency spot noise jamming can only jam sole frequency at a certain instant. Aimed at that the effect of jamming frequency-agile radar and adaptive frequency hopping radar is restricted using traditional frequency spot noise without guiding by instantaneous frequency measurement, an adaptive frequency spot noise jamming based on digital RF memories is proposed. The jamming is realized by making use of memorizing the leading edge sample of intercepted radar signal and the sample which contains the starting frequency is product-modulated by narrow-band noise in time domain. The jammer which is time-sharing receive/ transmit has the capability of frequency spot jamming for frequency-agile radar and adaptive frequency hopping radar with out frequency measuring is studied. The effectiveness is showed by simulation.