Method for the correlation coefficient estimation of the bottom echo signal in the shallow water application using interferometric echo sounder

• Autorzy: Grall Piotr , Marszal Jacek

Identyfikatory

DOI

10.21008/j.0860-6897.2021.1.03

• Języki publikacji: EN

Abstrakty

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.

Słowa kluczowe

EN

coherence estimation; multiphase echo sounder; sub-array processing

PL

szacowanie koherencji; echosonda

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2021
• Tom: Vol. 32, nr 1
• Strony: art. no. 2021103
• Opis fizyczny: Bibliogr. 13 poz., rys. kolor., wykr.

Twórcy

autor

Grall Piotr

• Gdańsk University of Technology, Faculty of Electronics, Telecommunications and Informatics, Department of Sonar Systems, Narutowicza 11/12,80-233 Gdańsk, Poland

autor

Marszal Jacek

• Gdańsk University of Technology, Faculty of Electronics, Telecommunications and Informatics, Department of Sonar Systems, Narutowicza 11/12,80-233 Gdańsk, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).