Underwater Acoustic Signal Acquisition, Transmission and Detection System Based on Graphics Processor

Abstract

The invention relates to an underwater acoustic signal collection, transmission and detection system based on a graphics processor. The underwater acoustic signal collection, transmission and detection system comprises one or more underwater acoustic collection devices, a signal conditioning module, an AD collection module, a transmission module for receiving data information output by the AD collection module, and an upper computer; a receiving buffer in the upper computer receives the data transmitted by the transmission module, and sends an interrupt request message to a data disassembly and data recombination module after buffering to a certain depth, the data disassembly and data recombination module extracts the received data from the buffer after receiving the interrupt request message, disassembles the received data according to a transmission protocol, and then recombines the data in sequence according to an underwater acoustic collection device channel; underwater acoustic signal data are stored in a disk array after being recombined, and the recombined data are respectively transmitted to the corresponding graphics processor according to an underwater acoustic signal data number thereof; and a filtering and denoising module in the graphics processor respectively performs bandpass filter filtering and spectral subtraction denoising on the received underwater acousticdata.

Description

technical field [0001] The invention relates to the field of underwater acoustic signal processing, in particular to an underwater acoustic signal acquisition, transmission and detection system based on a graphics processor. Background technique [0002] Collect, transmit, and store underwater acoustic signals (including underwater natural environment sounds, underwater animal sounds, and underwater machine sounds, etc.) of great significance. When the underwater acoustic acquisition network is relatively complex, such as in the case of a large number of hydrophones, a wide acquisition range and a large acquisition density, a large-scale acoustic data will be generated, and the underwater acoustic signals will be collected, transmitted and collected. Storage presents huge challenges. At the same time, feature extraction and detection of acoustic signals will also be difficult to ensure real-time and accuracy. [0003] Most of the existing underwater acoustic signal acquis...

AI Technical Summary

Problems solved by technology

Although this processing method is simple, the calculation burden of the central processing unit is relatively large.

And the high-performance CPU is expensive, which increases the cost of the detection system

At the same time, even a high-performance central processing unit has very limited computing power and computing resources, making it difficult for a host computer to simultaneously collect, transmit and process hydrophone data of many channels

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