Bayesian source tracking via focalization and marginalization in an uncertain Mediterranean Sea environment

The Journal of the Acoustical Society of America
Stan E DossoPeter L Nielsen

Abstract

This paper applies Bayesian source tracking in an uncertain environment to Mediterranean Sea data, and investigates the resulting tracks and track uncertainties as a function of data information content (number of data time-segments, number of frequencies, and signal-to-noise ratio) and of prior information (environmental uncertainties and source-velocity constraints). To track low-level sources, acoustic data recorded for multiple time segments (corresponding to multiple source positions along the track) are inverted simultaneously. Environmental uncertainty is addressed by including unknown water-column and seabed properties as nuisance parameters in an augmented inversion. Two approaches are considered: Focalization-tracking maximizes the posterior probability density (PPD) over the unknown source and environmental parameters. Marginalization-tracking integrates the PPD over environmental parameters to obtain a sequence of joint marginal probability distributions over source coordinates, from which the most-probable track and track uncertainties can be extracted. Both approaches apply track constraints on the maximum allowable vertical and radial source velocity. The two approaches are applied for towed-source acoustic data ...Continue Reading

References

Sep 1, 1991·The Journal of the Acoustical Society of America·M D Collins, W A Kuperman
Dec 1, 1996·Statistical Methods in Medical Research·A Gelman, D B Rubin
Jul 27, 2002·The Journal of the Acoustical Society of America·Stacy L TantumKerem Harmanci
Feb 4, 2006·The Journal of the Acoustical Society of America·Stan E DossoMichael J Wilmut
Jun 7, 2007·The Journal of the Acoustical Society of America·Stan E Dosso, Michael J Wilmut
Jul 24, 2008·The Journal of the Acoustical Society of America·Stan E Dosso, Michael J Wilmut
Feb 12, 2009·The Journal of the Acoustical Society of America·Stan E Dosso, Michael J Wilmut
May 12, 2009·The Journal of the Acoustical Society of America·Dag Tollefsen, Stan E Dosso

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Citations

Nov 5, 2013·The Journal of the Acoustical Society of America·Dag Tollefsen, Stan E Dosso

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