Broadband Acoustic Intensity Fluctuations in the Tyrrhenian Sea

Abstract

An acoustic propagation experiment was carried out in the Tyrrhenian Sea in October 1985 in which signals from a broadband source were recorded at a range of 5 km with a vertical 62 m hydrophone array over a period of 5 days. The experiment, named 'NAPOLI 85', was designed to investigate the transfer function of the ocean medium over an acoustic frequency range from 250-2000 Hz as a function of time and position down the vertical array. This paper treats the ocean transfer function in both the time and frequency domains for the lower refracted path. The intensity fluctuations down the array at an acoustic frequency of 1 kHz are presented for the 5 days.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1996
Accession Number
AD1121078

Entities

People

  • B. J. Uscinski
  • T. Akal

Organizations

  • SACLANT ASW Research Centre

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acoustic Frequencies
  • Acoustic Propagation
  • Acoustic Signals
  • Acoustics
  • Data Processing
  • Detection
  • Diffraction
  • Frequency
  • Frequency Domain
  • Identification
  • Integrals
  • Nato
  • Pattern Recognition
  • Physics Laboratories
  • Probability
  • Probability Distributions
  • Random Variables
  • Scattering
  • Statistical Analysis
  • Statistics
  • Transfer Functions

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Oceanography.
  • Phased Array Antenna Design.