While-drilling sound wave data noise reduction measurement method based on signal synchronization

The invention relates to the technical field of while-drilling sound wave noise reduction, and provides a while-drilling sound wave data noise reduction measurement method based on signal synchronization, and the method comprises the steps: carrying out the pre-sampling before a low-frequency pulse pump is effectively excited, and then extracting the center frequency and phase information of the noise of the low-frequency pulse pump through fast Fourier transform; and the moments of excitation and sampling of the sound wave signals are adjusted according to the center frequency and phase information of the low-frequency pulse pump noise. Compared with a traditional analog high-pass filter, the low-frequency pulse noise suppression device has a good suppression effect on low-frequency pulse noise generated by a specific noise source, namely a mud pulser, and particularly, the low-frequency pulse noise suppression device can enable an instrument to autonomously adapt to low-frequency pulsers with different freq