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

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    JAS0EL492.pdf (880.7Kb)
    Date
    2012-05-25
    Author
    Udovydchenkov, Ilya A.  Concept link
    Brown, Michael G.  Concept link
    Duda, Timothy F.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/5247
    As published
    https://doi.org/10.1121/1.4722193
    DOI
    10.1121/1.4722193
    Keyword
     Acoustic arrays; Acoustic signal processing; Modal analysis; Underwater acoustic propagation 
    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.
    Description
    Author Posting. © Acoustical Society of America, 2012. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution. The definitive version was published in Journal of the Acoustical Society of America 131 (2012): EL492-EL498, doi:10.1121/1.4722193.
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    • Applied Ocean Physics and Engineering (AOP&E)
    Suggested Citation
    Journal of the Acoustical Society of America 131 (2012): EL492-EL498
     

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