OPTIMUM THEORETICAL STRUCTURES OF SONAR SYSTEMS EMPLOYING SPATIALLY- DISTRIBUTED RECEIVING ELEMENTS

Abstract

The paper reviews the structure of optimum active sonar systems employing spatially distributed receiving elements. The systems considered operate in the presence of a time-variable noise field and in a randomly-varying transmission medium. The required signal-processing operations can be divided into two groups, one depending upon the noise characteristics and the other upon the signal characteristics. The noise-dependent processor is studied with special emphasis on structures that can adapt themselves to a time-varying noise field. The signal-dependent processor is derived for some simple types of random signal distortion. The signal characteristics required for the instrumentation of such processors are related to the impulse response of the target-medium combination.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1968
Accession Number
AD0839817

Entities

People

  • F. Bryn

Organizations

  • SACLANT ASW Research Centre

Tags

Communities of Interest

  • Energy and Power Technologies
  • Human Systems

DTIC Thesaurus Topics

  • Adaptive Systems
  • Ambient Noise
  • Detection
  • Filters
  • Governments
  • Information Processing
  • Information Science
  • Measurement
  • Noise
  • Physical Properties
  • Probability
  • Probability Density Functions
  • Radial Velocity
  • Signal Processing
  • Sonar Receivers
  • Sonar Signals
  • Surveys

Fields of Study

  • Engineering

Readers

  • Acoustics.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Speech Processing/Speech Recognition.