title: Coherence extrapolation for underwater ambient noise.
abstract: 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.
authors.affiliation: School of Earth and Ocean Sciences, University of Victoria, 3800 Finnerty Road, Victoria, British Columbia V8P 5C2, Canada jorgeq@uvic.ca, sdosso@uvic.ca.
authors.forename: Jorge E
authors.initials: JE
authors.lastname: Quijano
authors.affiliation: School of Earth and Ocean Sciences, University of Victoria, 3800 Finnerty Road, Victoria, British Columbia V8P 5C2, Canada jorgeq@uvic.ca, sdosso@uvic.ca.
authors.forename: Stan E
authors.initials: SE
authors.lastname: Dosso
authors.affiliation: Northwest Electromagnetics and Acoustics Research Laboratory, Portland State University, 18 SW 4th Avenue, Portland, Oregon 97201 siderius@pdx.edu, lan.muzi@gmail.com.
authors.forename: Martin
authors.initials: M
authors.lastname: Siderius
authors.affiliation: Northwest Electromagnetics and Acoustics Research Laboratory, Portland State University, 18 SW 4th Avenue, Portland, Oregon 97201 siderius@pdx.edu, lan.muzi@gmail.com.
authors.forename: Lanfranco
authors.initials: L
authors.lastname: Muzi