Coherence extrapolation for underwater ambient noise

This paper considers extrapolation of the vertical coherence of surface-generated oceanic ambient noise to simulate measurements made on a longer sensor array. The extrapolation method consists of projecting the noise coherence measured with a limited aperture array into the domain spanned by prolat...

Full description

Saved in:
Bibliographic Details
Published inThe Journal of the Acoustical Society of America Vol. 135; no. 6; p. EL318
Main Authors Quijano, Jorge E, Dosso, Stan E, Siderius, Martin, Muzi, Lanfranco
Format Journal Article
LanguageEnglish
Published United States 01.06.2014
Online AccessGet more information

Cover

More Information
Summary:This paper considers extrapolation of the vertical coherence of surface-generated oceanic ambient noise to simulate measurements made on a longer sensor array. The extrapolation method consists of projecting the noise coherence measured with a limited aperture array into the domain spanned by prolate spheroidal wave functions, which are an orthogonal basis defined by array parameters and the noise frequency. Using simulated data corresponding to selected multi-layered seabeds as ground truth, the performance of the extrapolation method is explored. Application of the technique is also demonstrated on experimental data.
ISSN:1520-8524
DOI:10.1121/1.4879663