对线性调频脉压雷达的导前假目标群干扰
doi: 10.3724/SP.J.1146.2006.00458 cstr: 32379.14.SP.J.1146.2006.00458
Preceded False Target Groups Jamming Against LFM Pulse Compression Radars
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摘要: 该文基于间歇收发干扰体制,研究了通过对间歇采样LFM信号的频率调制和幅度补偿,产生导前假目标群问题。根据LFM信号匹配滤波器的群延迟特性,通过对采样信号进行频率调制控制假目标群相对真实目标的空间分布特性。对频率失配和间歇采样导致的幅度损失分别进行幅度补偿,使假目标群在幅度上超过真实目标,实现对雷达的有效干扰。最后的仿真验证了理论分析的正确性。Abstract: Frequency modulation and amplitude compensation of interruptedly received LFM signals are studied to precede a false target group based on interrupted T/R jamming system. The distribution of a false target group can be controlled by frequency modulation with received signal based on group delay of matched filter for LFM waveform. Amplitude loss caused from frequency mismatch and interrupted receiving is compensated respectively, so that the false target group can suppress the true target on amplitude to make effective jamming against radar. Finally, numerical simulations verify the analysis.
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