Measuring the effect of ambient noise directionality and split-beam processing on the convergence of the cross-correlation function

TitleMeasuring the effect of ambient noise directionality and split-beam processing on the convergence of the cross-correlation function
Publication TypeJournal Article
Year of Publication2013
AuthorsFried S.E, Walker SC, Hodgkiss WS, Kuperman WA
JournalJournal of the Acoustical Society of America
Volume134
Pagination1824-1832
Date Published2013/09
Type of ArticleArticle
ISBN Number0001-4966
Accession NumberWOS:000330047000013
Keywordscoherent wave-fronts; emergence; fields; greens-function; ocean; rate; spatial correlation
Abstract

Measurements of ambient noise have been used to infer information about the ocean acoustic environment. In recent years the correlation of ambient noise has been shown to give estimates of the travel time of acoustic paths between the sensors recording the noise. A number of issues affect the results of the noise correlation. This paper presents the results of noise correlation of the two horizontally separated arrays of sensors in the 2010 ambient noise experiment. Using the experimental data, the effects on the convergence of the noise correlation are examined with respect to the size and shape of the arrays, the length of time used, and the directionality of the noise field. (C) 2013 Acoustical Society of America.

DOI10.1121/1.4816490
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