A metric for characterization of two-dimensional spatial coherence

Daniel C. Brown, Cale F. Brownstead, Thomas B. Gabrielson, Anthony P. Lyons

    Research output: Contribution to journalArticlepeer-review

    4 Scopus citations

    Abstract

    A metric is developed providing a quantitative measure of the two-dimensional spatial coherence of scattered fields. The metric is based on fitting a function similar to bivariate Gaussian to measured two-dimensional coherence surfaces. This function provides a robust fit to the measured data for a range of coherence lengths and surface asymmetries. Through an eigendecomposition of the bivariate Gaussian covariance matrix, it is possible to define surface orientation as well as coherence lengths along the major and minor axes. The metric is applied to normal-incidence scattering data collected in recent field trials at Seneca Lake, NY.

    Original languageEnglish (US)
    Pages (from-to)EL313-EL318
    JournalJournal of the Acoustical Society of America
    Volume142
    Issue number3
    DOIs
    StatePublished - Sep 1 2017

    All Science Journal Classification (ASJC) codes

    • Arts and Humanities (miscellaneous)
    • Acoustics and Ultrasonics

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