Analysis of the channel time response from modal filtering and array beamforming: application to ocean tomography

Author

Le Bras, P.

Author_Institution

Lab. d´´Acoust. Sous-Marine, IFREMER, Brest, France

Volume

2

fYear

1994

fDate

13-16 Sep 1994

Abstract

In the field of ocean acoustic tomography the author proposes an array processing for analysing the time domain response due to para-axial propagation along the channel axis. The author uses a modal description of the propagation. Broadband modal filtering is applied in order to isolate each modal contribution to the time response. Then, from a time-frequency analysis of filtering outputs the author recovers the dispersion curve of the filtered mode

Keywords

acoustic tomography; oceanographic techniques; underwater sound; acoustic tomography; array beamforming; array processing; broadband modal filtering; channel time response; dispersion curve; measurement technique; modal filtering; ocean acoustics; ocean tomography; para-axial propagation; time domain response; underwater sound propagation; Acoustic propagation; Array signal processing; Filtering; Oceans; Signal analysis; Signal resolution; Time domain analysis; Time factors; Time frequency analysis; Tomography;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS '94. 'Oceans Engineering for Today's Technology and Tomorrow's Preservation.' Proceedings

Conference_Location

Brest

Print_ISBN

0-7803-2056-5

Type

conf

DOI

10.1109/OCEANS.1994.364121

Filename

364121