LFM信号的卷积调制干扰仿真

Simulation of the Convolution Demodulation for LFM Signal

线性调频脉冲信号在雷达中应用广泛,其优点是具有脉内相干性。传统的噪声干扰进入雷达后无法获得处理增益,因而在功率有限的情况下往往干扰效果不佳。相对于噪声干扰,卷积调制干扰的优点是可获得雷达较大的处理增益。对基于LFM信号的卷积调制干扰进行了理论分析,并对该信号进入雷达后的干扰效果进行了仿真。

LFM signal is widely used in radar area.The advantage of this signal is that it is coherent in the pulse.Conventional noise jamming can not obtain the processing gain.So,the jamming effect is often not good in the condition of limited jamming power.Compared to noise signal,great processing gain can be obtained by using the jamming technique based on convolution modulation.The theory of the jamming technique based on convolution modulation of LFM signal is analyzed.After that,the effect of this jamming technique is simulated.