ONR Graduate Traineeship Award Update

Abstract

The top-level goal of this project is to examine the physics of ambient noise in the ocean which limits the use of ambient noise correlation techniques. In addition this research should lead the PI to a Ph.D. Noise correlation processing extracts coherent signals from seemingly random noise data. Although this technique has been successfully used in processing ocean ambient noise data it has severe limitations due to the changing ocean environment and the spatial and temporal variability in sources. In this project we are: (1) investigating the physics of the noise processing procedure that constrains the optimum correlation, (2) attempting to understand where and how the degradation of the derived time domain Green s function (TDGF) comes about, and (3) exploit array and signal processing techniques to optimize the signal-to-clutter (otherwise known as the signal-to-noise ) rate of the noise correlation processing.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2009
Accession Number
ADA602948

Entities

People

  • Stephanie Fried

Organizations

  • University of California, San Diego

Tags

DTIC Thesaurus Topics

  • Acoustic Arrays
  • Ambient Noise
  • Arrays
  • Computer Simulations
  • Correlation Techniques
  • Data Sets
  • Environment
  • Information Operations
  • Noise
  • Ocean Environments
  • Oceans
  • Physics
  • Reflection
  • Signal Processing
  • Simulations
  • Time Domain

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Research Science/Academic Research