Piecewise coherent mode processing of acoustic data recorded on two horizontally separated vertical line arrays

Ilya A. Udovydchenkov, Michael G. Brown, Timothy F. Duda

Research output: Contribution to journalArticle

Abstract

Motivated by measurements made in the 2004 Long-Range Ocean Acoustic Propagation Experiment (LOAPEX), the problem of mode processing transient acoustic signals collected on two nearby vertical line arrays is considered. The first three moments (centroid, variance, and skewness) of broadband distributions of acoustic energy with fixed mode number (referred to as modal group arrivals) are estimated. It is shown that despite the absence of signal coherence between the two arrays and poor high mode number energy resolution, the centroid and variance of these distributions can be estimated with tolerable errors using piecewise coherent mode processing as described in this paper.

Original languageEnglish (US)
Pages (from-to)EL492-EL498
JournalJournal of the Acoustical Society of America
Volume131
Issue number6
DOIs
StatePublished - Jun 2012

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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