A GRU Signal Denoising Method for Φ-OTDR Submarine Cable Monitoring System

In the monitoring signals of actual submarine cables, there are often many noise interferences. A GRU signal denoising method for Φ -OTDR submarine cable monitoring system is proposed. This method can realize simultaneous noise reduction of multiple spatial channels. The experiment proves that the proposed GRU method can maintain good stability in the face of noise of different intensities, and improve the SNR of 14.76dB under -10dB noisy.