Affordable Access

Long range source localization from single hydrophone spectrograms.

Authors
  • Kuperman, W A
  • D'Spain, G L
  • Heaney, K D
Type
Published Article
Journal
The Journal of the Acoustical Society of America
Publisher
Acoustical Society of America
Publication Date
May 01, 2001
Volume
109
Issue
5 Pt 1
Pages
1935–1943
Identifiers
PMID: 11386547
Source
Medline
License
Unknown

Abstract

A source near the deep sound channel axis excites mode groups (or paths) that involve both deep sound channel and boundary interacting propagation. Dispersion from a broadband source as measured on a single hydrophone can be used to estimate source range. Furthermore, modal group speeds have a functional transition when passing through purely refractive to boundary reflecting phase speed regions which, under certain conditions, provides additional arrival structure to aid in source localization. This additional arrival structure is in the form of a focal region in a spectrogram. Indeed, different data sets from the Acoustic Thermometry of the Ocean Climate (ATOC) Program [ATOC Consortium, Science 281, 1327-1332 (1998)] show that localization can be accomplished using this focal region and/or the overall dispersion properties as originally suggested fifty years ago [M. Ewing and J. L. Worzel, Geo. Soc. Am., Memoir 27 (1948)].

Report this publication

Statistics

Seen <100 times