Arrival structure of a distance source on the horizontal line array in deep ocean

Tongwei Zhang, Kunde Yang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The arrival signals of the horizontal line array (HLA) in the waveguide are not plane waves. The direction of maximum array output will not be the exact direction of the source. The acoustic pressure field can be expressed in terms of a normal mode expansion. The output of the HLA for a distance source in the waveguide is then constructed by summing up contributions of the normal mode response to each of the modes weighted in accordance to the frequency-wavenumber response of the array. The low and high order modes arrive at shallow and steep grazing angles, respectively. In deep ocean, a source away from the sound channel axis couples strongly with high order modes while weakly with low order modes. The direction of maximum output of a HLA deviates significantly from the horizontal direction.

Original languageEnglish
Title of host publicationICSP2010 - 2010 IEEE 10th International Conference on Signal Processing, Proceedings
Pages2353-2356
Number of pages4
DOIs
StatePublished - 2010
Event2010 IEEE 10th International Conference on Signal Processing, ICSP2010 - Beijing, China
Duration: 24 Oct 201028 Oct 2010

Publication series

NameInternational Conference on Signal Processing Proceedings, ICSP

Conference

Conference2010 IEEE 10th International Conference on Signal Processing, ICSP2010
Country/TerritoryChina
CityBeijing
Period24/10/1028/10/10

Keywords

  • Array response
  • Deep ocean
  • Horizontal line array

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