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Ocean Remote Sensing Using Ambient Noise
University of Miami Miami United States
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Our long-term scientific goal is to understand the basic physics of low-frequency sound propagation in the ocean, and the effects of environmental variability on signal stability and coherence. We seek to understand the fundamental limits to signal processing imposed by ocean variability to enable advanced signal processing techniques, including matched field processing and other adaptive array processing methods. Work on this project has focused on noise interferometry the process by which an approximation to the transient Greens function GxAxB, t between locations xA and xB is estimated by cross-correlating records of ambient noise measured at xA and xB. In that context, our objective is to investigate and identify the limitations of noise interferometry for remote sensing applications in a variety of ocean environments.
APPROVED FOR PUBLIC RELEASE