ONR Graduate Traineeship Award Update

Abstract

LONG-TERM GOALS: This project s goal is to explore ways of using ambient noise in the ocean to extract the physical characteristics of the ocean environment. In addition, this research is the the PI s Ph.D. research, leading to her completed Ph.D. this term. OBJECTIVES: 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 of the ambient noise field. 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-tonoise ) rate of the noise correlation processing.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2011
Accession Number
ADA571683

Entities

People

  • Stephanie Fried

Organizations

  • Scripps Institution of Oceanography

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Abstracts
  • Ambient Noise
  • Cross Correlation
  • Data Sets
  • Environment
  • Information Operations
  • Measurement
  • Noise
  • Numbers
  • Ocean Environments
  • Oceans
  • Signal Processing
  • Square Roots
  • Time Domain

Readers

  • Acoustical Oceanography.
  • Acoustics.