Net cage culture fish school noise signal processing method, system and device and storage medium

The invention discloses a noise signal processing method and system for a cage culture fish school, a computer device and a storage medium, and the method comprises the steps: obtaining a noise signal of the cage culture fish school in a target time period, determining a target event in the target time period, carrying out the empirical mode decomposition of the noise signal, and obtaining a noise signal of the cage culture fish school; and obtaining a plurality of IMF components, selecting the IMF component of which the correlation coefficient is greater than a threshold value as a target IMF component, obtaining a fish school activity type corresponding to the frequency range of the target Hilbert spectrum, and recording an association relationship between the target event and the fish school activity type. The fish school activity type and the fish school activity degree are determined by tracking and detecting the occurrence of the target event, fish school breeding and fishing are guided according to the