Determination of acoustic waveguide invariant using ships as sources of opportunity in a shallow water marine environment

TitleDetermination of acoustic waveguide invariant using ships as sources of opportunity in a shallow water marine environment
Publication TypeJournal Article
Year of Publication2017
AuthorsVerlinden C.MA, Sarkar J., Cornuelle BD, Kuperman WA
JournalJournal of the Acoustical Society of America
Volume141
PaginationEL102-EL107
Date Published2017/02
Type of ArticleArticle
ISBN Number0001-4966
Accession NumberWOS:000395310100004
Keywordslong-range; ocean; source localization; spectrograms
Abstract

The waveguide invariant (WGI) is a property that can be used to localize acoustic radiators and extract information about the environment. Here the WGI is determined using ships as sources of opportunity, tracked using the Automatic Identification System (AIS). The relationship between range, acoustic intensity, and frequency for a ship in a known position is used to determine the WGI parameter beta. These b values are interpolated and a map of b is generated. The method is demonstrated using data collected in a field experiment on a single hydrophone in a shallow water environment off the coast of Southern California. (C) 2017 Acoustical Society of America

DOI10.1121/1.4976112
Student Publication: 
No
Research Topics: 
sharknado