Coronavirus Information for the UC San Diego Community

Our leaders are working closely with federal and state officials to ensure your ongoing safety at the university. Stay up to date with the latest developments. Learn more.

Passive bottom reflection-loss estimation using ship noise and a vertical line array

TitlePassive bottom reflection-loss estimation using ship noise and a vertical line array
Publication TypeJournal Article
Year of Publication2017
AuthorsMuzi L., Siderius M., Verlinden C.M
JournalJournal of the Acoustical Society of America
Date Published2017/06
Type of ArticleArticle
ISBN Number0001-4966
Accession NumberWOS:000403467300040
Keywordsambient-noise; bayesian geoacoustic inversion; Coherence; ocean; opportunity; single hydrophone; wind-driven

An existing technique for passive bottom-loss estimation from natural marine surface noise (generated by waves and wind) is adapted to use noise generated by ships. The original approach-based on beamforming of the noise field recorded by a vertical line array of hydrophones-is retained; however, additional processing is needed in order for the field generated by a passing ship to show features that are similar to those of the natural surface-noise field. A necessary requisite is that the ship position, relative to the array, varies over as wide a range of steering angles as possible, ideally passing directly over the array to ensure coverage of the steepest angles. The methodology is illustrated through simulation and applied to data from a field experiment conducted offshore of San Diego, CA in 2009. (C) 2017 Acoustical Society of America.

Student Publication: