An inversion method of geoacoustic properties based on towed tilted line array in shallow water

Kunde Yang, Yuanliang Ma, Xuegang Li, Haibin Qiu

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

Abstract

This paper studied a method for extracting seabed reflection losses based on a towed line array for large scale sea areas with high resolution. The experimental system consisted of a towed tilted line array and three acoustic sources to cover a large scope of grazing angles (from 10° to 70°). The simulation results in shallow water show that different arrays have different experimental configurations in order to cover the same scope of grazing angles. The vertical line array must operate with several acoustic sources and requires a stationary platform of the array. The towed horizontal line array needs only one acoustic source but requires a large aperture line array. The towed tilted line array combines the merits of the vertical line array and the horizontal line array, which can invert the seabed acoustic parameters in a moving and high resolution way, and requires only a smaller aperture line array. The error resulting from the distortion of the array shape was analyzed for the inversion method.

Original languageEnglish
Title of host publicationShallow-Water Acoustics - Proceedings of the Second International Shallow-Water Acoustics Conference, SWAC'09
Pages278-285
Number of pages8
DOIs
StatePublished - 2010
Event2nd International Shallow-Water Acoustics Conference, SWAC'09 - Shanghai, China
Duration: 16 Sep 200920 Sep 2009

Publication series

NameAIP Conference Proceedings
Volume1272
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference2nd International Shallow-Water Acoustics Conference, SWAC'09
Country/TerritoryChina
CityShanghai
Period16/09/0920/09/09

Keywords

  • Seabed acoustic parameters
  • Seabed reflection loss
  • Towed tilted line array
  • Underwater acoustic field prediction

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