Very Low Frequency Acoustic Detection of Submarines

Abstract

This report examines the detectability of blade rate lines for several classes of Soviet submarines. The Naval Research Laboratory has measured low frequency (VLF) transmission loss and ambient noise at sites in the Atlantic Ocean and Norwegian Sea. The results are used to calculate the array gain necessary to detect present and furture classes of Soviet submarines at these Atlantic Ocean and Norwegian Sea sites. The results are presented for submarine speeds of interest. The problem of array size needed to obtain necessary array gain and the problem of signal spatial coherence are considered.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1977
Accession Number
ADC010105

Entities

People

  • C. R. Rollins
  • William C. Dixon

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Detection
  • Ambient Noise
  • Arrays
  • Atlantic Ocean
  • Bandwidth
  • Detection
  • Frequency
  • Gain
  • Losses
  • Military Research
  • Norwegian Sea
  • Oceans
  • Plastic Explosives
  • Test And Evaluation
  • Threat Evaluation
  • Transmission Loss
  • Very Low Frequency

Readers

  • Acoustical Oceanography.
  • Maritime and Naval Warfare Studies
  • Seismology