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.
Coherence Extrapolation for Underwater Ambient Noise
Title: Coherence Extrapolation for Underwater Ambient Noise
May 27, 2014
Journal: The Jounal of the Acoustical Society of America
Publisher: Acoustical Society of America
Quijano, J.; Dosso, S.; Siderius, M.; Muzi, L. (2014). Coherence Extrapolation for Underwater Ambient Noise. The Jounal of the Acoustical Society of America, 135(6), 1-6.