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Article

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Title

Method for the Correlation Coefficient Estimation of the Bottom Echo Signal in the Shallow Water Application Using Interferometric Echo Sounder

Authors

Year of publication

2021

Published in

Vibrations in Physical Systems

Journal year: 2021 | Journal volume: vol. 32 | Journal number: no. 1

Article type

scientific article

Publication language

english

Keywords
EN
  • coherence estimation
  • multiphase echo sounder
  • sub-array processing
Abstract

EN The article presents a new method for the assessment of bottom echo correlation coefficient in the presence of multiple echoes. Bottom correlation coefficient is a parameter that characterizes spatial properties of echo signal. Large variability of the bottom shape or properties (for example caused by the presence of bottom objects) and the presence of the acoustic shadow strongly influence the value of the correlation coefficient. There is a problem, however, in the proper determination of correlation coefficient of the bottom echo when more than one echo is present. In the shallow water application, the echoes coming to the hydroacoustic array from various directions influence the measured value of the correlation coefficient. The method proposed by the authors challenges this issue by applying a subarray processing based on the initial depth estimation. The article presents the preliminary research results and describes the limitations of the proposed method.

Pages (from - to)

2021103-1 - 2021103-6

Comments

article number: 2021103

License type

CC BY (attribution alone)

Full text of article

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public

Ministry points / journal

70

Ministry points / journal in years 2017-2021

70

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