Design And Implementation Of Multiple Acoustic Vector Submarine Array Acquisition And Storage Platform

No matter what kind of system,are inevitable to explore the impact of noise.Also in the area of acoustic detection,marine noise can cause deviations in the detection of equipment.Therefore,the observation of ocean noise is of great significance and is the basis for the study of the marine environment.In order to explore the characteristics of ocean noise signals,this paper designs a multivariate vector submarine array that can be used to observe ocean noise.The system can be used to observe the ocean noise at different locations and provide a hardware and software platform for the exploration of ocean noise.In this paper,we design a self-contained acquisition and storage platform that can synchronously observe ocean acoustic signals.The data collected by the hardware is filtered and amplified by an analog circuit first,and then the data is transmitted to a digital circuit.Adopt DSP5509 as the core control processor of the circuit,CPLD serves as the auxiliary controller of DSP,CF card takes the storage module as the core of self-contained storage medium.The stability of other devices as peripheral support systems is a guarantee of the reliability of the data sources.Peripherals include atomic clocks that provide second-pulse synchronization signals and system time recording;compass,sub-standard pose recording;analog circuits that provide vector hydrophone acquisition data;and synchronizers that provide GPS time and GPS seconds pulse.The software adopts the design idea of hierarchical code,designs software architecture,hardware level code,function-oriented code to realize the synchronous observation of multiple vector submersibles and store the function of ocean noise signal.The hardware level code mainly provides the driving of each chip hardware to work under the controllable working mode of the program and provides the stable hardware platform for the functional software.Combined with the South China Sea experimental data,the algorithm of underwater acoustic vector signal processing,software simulation and theoretical deduction,the noise vector field in the South China Sea is analyzed and argued,and the noise experiment foundation and equipment design and train of thought are established for the underwater acoustic detection in the South China Sea.