Simulation of Underwater Diversity Array.

Abstract

The objective of the system is to approach a condition in which the multiple ray arrivals from a distant source are separately received and coherently combined. Because the analytical forms giving the final output signal-to-noise ratio (SNR) are too involved for direct computation, simulation experiments were carried out. Results of this work are presented for the system described which is based on maximal ratio combining (MRC) of the multiple rays formed. At the same time certain other cases were simulated in order to see what magnitude of improvement is obtained using this method over simpler ones. Given below are results for (1) a three-dimensional array with multiple beams (branches) using only coherent phasing of branches (known as equal gain combining (EGC), (2) a three-dimensional array with multiple beams using selection of the maximum amplitude branch (known as selection combining (SC)), (3) a three-dimensional array with a single fixed focus beam, and (4) two-dimensional array.

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Document Details

Document Type
Technical Report
Publication Date
Nov 12, 1980
Accession Number
ADA100706

Entities

People

  • Fred Haber
  • Paul Yeh

Organizations

  • Moore School of Electrical Engineering

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Arrays
  • Amplitude
  • Arrays
  • Bandwidth
  • Elevation
  • Frequency
  • Phase Shift
  • Random Variables
  • Simulations
  • Standards
  • Three Dimensional
  • Two Dimensional

Readers

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  • Oceanography.
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