Instruction Manual for Ultrasonic Noise Recording System

Abstract

A portable system for recording ambient noise in the sea has been developed. It is suitable for ultrasonic frequencies and can digitise up to a rate of 1 MHz. The hydrophone is attached to the end of a light weight aluminium pole of 4.5 m extension, which can be dismantled into 1.5 m lengths for ease of transport. The hydrophone has an integral preamplifier which is powered by batteries. The analogue to digital conversion is performed in a box with similar dimensions to a laptop computer. It is powered by another similarly-sized box of rechargeable batteries. The process is controlled by and the data is stored on a laptop computer. Software has been written to display the spectra of the ambient noise. Instructions on the use of the hardware and software are provided.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2001
Accession Number
ADA392636

Entities

People

  • Mark L. Readhead

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acquisition
  • Ambient Noise
  • Analogs
  • Australia
  • Computers
  • Conversion
  • Data Acquisition
  • Department Of Defense
  • Frequency
  • Instruction Manuals
  • Instructions
  • Laptop Computers
  • Manuals
  • Noise
  • Power Supplies
  • Preamplifiers
  • Storage Batteries

Readers

  • Acoustical Oceanography.
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Structural Health Monitoring of Composite Structures.