Application of some echo parameters to the seabed classification - methodological analysis

• Autorzy: Tęgowski J. , Łubniewski Z.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the methodological analysis of acoustical seabed classification procedure, which aim is to define the most appropriate bottom echo parameters as an input set. Several acoustical and statistical features of echo envelope were compared with morphological features of bottom sediments and a set of parameters was proposed: integral backscattering strength, time of reverberation, radius of autocorrelation, fractal dimension, moment of inertia, and skewness. It was shown using real echoes from seafloor, that this set may be a good descriptor of sea bottom sediments and may be used in classification procedures. In addition, the spatial distribution of echo skewness within Polish Economical Zone of Baltic Sea was presented as an example and compared with sediments allocation map.

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2001
• Tom: Vol. 4
• Strony: 237--240
• Opis fizyczny: Bibliogr.4 poz., rys.

Twórcy

autor

Tęgowski J.

• Institute of Oceanology, Polish Academy of Sciences, Powstańców Warszawy 55,81-712 Sopot, Poland

autor

Łubniewski Z.

• Department of Remote Sensing and Monitoring Systems, Technical University of Gdańsk, Narutowicza 11/12,80-952 Gdańsk, Poland

Bibliografia

• [1] J. Tęgowski, Z. Łubniewski, The use of fractal properties of echo signals for acoustical c1assi-fication of bottom sediments, Acustica United with Acta Acustica, Vol. 86(2),276- 282,2000.
• [2] J. Tęgowski, Z. Łubniewski, Fractal characterisation of 30 kHz echoes from Southern Baltic bottom, Hydroacoustics, Vol. 3, 15-18,2000.
• [3] J. Urick, Principles of underwater sound for engineers, McGraw-Hill Book Company, New York 1975.
• [4] Geological chart of the Baltic Sea bottom, Państwowy Instytut Geologiczny, Warszawa, 1992.