Distributed sound wave sensing noise reduction system and method based on reference sensor

The invention discloses a distributed sound wave sensing noise reduction system and method based on a reference sensor. The system comprises a phase type optical time domain reflection module, the reference sensor and a noise compensation algorithm module. The method comprises the following steps: S1, establishing a phase type optical time domain reflection module; S2, setting a reference sensor to obtain noise characteristics of the phase-type optical time domain reflection module; and S3, calculating and compensating the noise characteristics through a noise compensation algorithm module. According to the method, local signals are collected through the reference sensor, the deep neural network is trained through the signals collected by the reference end, noise is predicted, and therefore the noise compensation function is achieved, the architecture of multiple reference sensors is provided, the implementation method is simple and convenient, the means are flexible, and high reliability and high robustness