Research on FH detection algorithm based on time-frequency matrix.

The stealthiness of frequency-hopping (FH) signals increases the difficulty of reconnaissance in low SNR environment. In this paper, we propose a FH signal detection algorithm based on time-frequency matrix, which can make full use of the unique features of the time-frequency matrix of FH signals, even if the FH signals are submerged in high-power noise. In addition, inspired by the idea of cancellation, we utilize cancellation to remove fixed frequency interference. Simulation analysis shows that the proposed algorithm has good anti-noise uncertainty and the detection performance of the proposed algorithm outperforms the compared methods When the SNR is in the low SNR environment.