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Accession Number ADA571683
Title ONR Graduate Traineeship Award Update.
Publication Date Sep 2011
Media Count 7p
Personal Author S. Fried
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-to-noise) rate of the noise correlation processing.
Keywords Acoustic fields
Addition
Ambient noise
Correlation
Long range(Time)
Methodology
Noise
Ocean environments
Oceans
Optimization
Physics
Processing
Rates
Signal processing
Spatial distribution
Time domain


 
Source Agency Non Paid ADAS
NTIS Subject Category 47C - Physical & Chemical Oceanography
46A - Acoustics
Corporate Author Scripps Institution of Oceanography, La Jolla, CA. Marine Physical Lab.
Document Type Technical report
Title Note Annual rept.
NTIS Issue Number 1316
Contract Number N00014-07-0223

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