DENOISING METHODS AND SYSTEMS FOR PRESERVING AMPLITUDE VARIATION WITH OFFSET (AVO) FEATURES OF PRE-STACK SEISMIC DATA

The present disclosure discloses a denoising method and a system for preserving amplitude variation with offset (AVO) features of pre-stack seismic data. The method includes: acquiring seismic wave data at at least one receiving point through a seismic signal acquisition device, and storing the seismic wave data in a memory; in response to ending of an acquisition operation of the seismic signal with the seismic signal acquisition device, determining, based on the seismic wave data in the memory, pre-denoising angle gather data through a processing device; and obtaining and outputting a denoised angle gather signal through inputting the pre-denoising angle gather data to a denoising device and performing denoising processing on the pre-denoising angle gather data based on the denoising device. In the present disclosure, an abnormal signal is identified in the memory, then the angle gather signal is denoised, and a user also use a user terminal to view signals before and after denoising and compare a denoising effect, which can improve denoising efficiency and accuracy.