A FFA and TFA based interception of LPI frequency hopping signal is presented in this paper. the algorithm can detect the frequency hopping signal effectively in low Signal to Noise Ratio (SNR);

• 该文提出了一种新的低截获概率(LPI)跳频信号的截获方法，该方法基于快速折叠算法和时频分析。在低信噪比环境下，该方法能有效检测跳频信号；