Ambient Noise and Signal-to-Noise Profiles in IOMEDEX

Abstract

Ambient noise vertical profiles in the Ionian Sea show temporal fluctuations in a few minutes at low, shipping-related frequencies to a few hours at higher, wind/sea-related frequencies. In the mean, ambient noise levels decrease with increasing depth over the frequency band of study: 20-300 Hz. Signal-to-noise profiles also show a fluctuation, depending on the range from source to receiver. These characteristics of deep-water ambient noise are discussed. The results and discussion bear directly on future sonar systems as to optional placement of sensors throughout the water column.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1973
Accession Number
AD0527037

Entities

People

  • Samuel W. Marshall

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acoustics
  • Ambient Noise
  • Frequency
  • Frequency Bands
  • Information Science
  • Ionian Sea
  • Measurement
  • Mediterranean Sea
  • Military Research
  • Modulation
  • Noise
  • Recording Systems
  • Security
  • Test And Evaluation
  • Transmission Loss
  • Water

Readers

  • Materials Science (Mechanical Engineering).
  • Oceanography.
  • Radar Systems Engineering.