Analysis of Propagation Loss and Signal-to-Noise Ratios from IOMEDEX

Abstract

Propagation-loss, noise, and signal-to-noise-ratio (S/N) measurements obtained in the Ionian Basin by using a continuous-wave (CW) projector, towed at a depth of 500 ft for seven days, and five receiving hydrophones, spanning the sound-channel axis at depths ranging from 270 to 2010 ft, are discussed. For these data, it is shown that the received signal level (L sub R) is at a maximum when the receiving hydrophone and source are both positioned near the sound- channel axis and that the noise level is lowest at the 1050- and 2010-ft depths. The S/N is optimum for the source-depth hydrophone and becomes progressively unfavorable for receivers positioned farther away from the channel axis.

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Document Details

Document Type
Technical Report
Publication Date
Jun 15, 1973
Accession Number
AD0526552

Entities

People

  • Paul D. Koenigs
  • Robert. L. Martin

Organizations

  • Naval Underwater Systems Center

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Acoustic Equipment
  • Acoustic Measurement
  • Acoustic Propagation
  • Acoustics
  • Acquisition
  • Ambient Noise
  • Bandwidth
  • Cables
  • Dead Reckoning
  • Deployment
  • Frequency
  • Instrumentation
  • Measurement
  • Military Research
  • Recording Systems
  • Standards
  • White Noise

Readers

  • Acoustical Oceanography.
  • Oceanography.
  • Radar Systems Engineering.