Distributed online monitoring system for underwater sound production of marine mammals

Abstract

The invention relates to a distributed online monitoring system for underwater sound production of marine mammals, which belongs to the field of sound signal acquisition and processing and comprises acoustic monitoring nodes and ashore terminals which are distributed. The acoustic monitoring node is composed of a hydrophone, an acoustic signal acquisition module, a real-time processing and identification module, a synchronous positioning module and a real-time communication module; the acoustic monitoring nodes are distributed in water and convert acoustic signals into data signals; the real-time processing recognition module recognizes which kind of animal sends out the sound signal in real time, and records the time when the signal is detected; the synchronous positioning module is used for resolving the position of the acoustic monitoring node and realizing clock synchronization of the synchronous positioning module, and the real-time communication module is used for sending working information to a shore terminal; the ashore terminal receives the information of each acoustic monitoring node and realizes the positioning of a sounding mammal; and the system provided by the invention can realize real-time on-line monitoring of underwater sound production of animals in an on-line and long-distance manner.

Description

technical field [0001] The invention belongs to the field of acoustic signal acquisition and processing, and in particular relates to a distributed online monitoring system for underwater vocalization of marine mammals. Background technique [0002] Monitoring marine mammals is an important means to improve human understanding of animals, a necessary process for studying how the environment affects animals, and is of great significance to the protection of endangered animals and the construction of ecological civilization. Monitoring of marine mammals usually uses optical and acoustic methods. [0003] Optical methods use light to obtain surface or underwater image features or behavior information of target animals. The water surface information acquisition uses the short window period when the animals are out of the water for intermittent monitoring, including manual visual inspection, manual use of cameras and drone recording, etc. These methods are easily affected by the...

AI Technical Summary

Problems solved by technology

These systems use a single hydrophone to receive acoustic signals, the receiving distance is relatively short, and they can only monitor whether there is a certain sound around them, and cannot locate the source of the sound, which limits our effective observation of marine mammals

Images