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THE IMAGING OF GDANSK BAY SEABED BY USING SIDE SONAR

Abstract

This paper is mainly aimed at presentation of an impact of environmental conditions on imaging accuracy by using hydro-acoustic systems in waters of a high non-uniformity of spatial distribution of hydrological parameters. Impact of refraction on erroneous estimation of range, in case of wave radiation into water under a large angle, like in side sonars or multi-beam echo-sounders, is especially important. In this paper seasonal changes in sound speed and its impact on acoustic beam refraction is discussed. And, examples which illustrate errors in determination of side sonar range occurred during last investigations carried out in Gdansk Bay waters are presented.

Keywords:

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Details

Issue
Vol. 25 No. S1(97) (2018)
Section
Latest Articles
Published
07-06-2018
DOI:
https://doi.org/10.2478/pomr-2018-0031
Licencja:
Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Open Access License

This journal provides immediate open access to its content under the Creative Commons BY 4.0 license. Authors who publish with this journal retain all copyrights and agree to the terms of the CC BY 4.0 license.

 

Authors

  • Grażyna Grelowska

    Gdańsk University of Technology, Faculty of Ocean Engineering and Ship Technology
  • Eugeniusz Kozaczka

    Gdańsk University of Technology, Faculty of Ocean Engineering and Ship Technology
  • Dominika Witos-Okrasińska

    Gdańsk University of Technology, Faculty of Ocean Engineering and Ship Technology
  • Wojciech Szymczak

    Polish Naval Academy

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