HYDROACOUSTICS
ANNUAL JOURNAL
START NEW VOL 20 SEARCH STATISTICS PAS - GDANSK DIVISION

Modelowanie odpowiedzi impulsowej dla rozpraszania wstecznego dna morskiego

pp. 35-38, vol. 3, 2000

Zbigniew Łubniewski
Politechnika Gdańska, Katedra Systemów Telemonitoringu, Gdańsk, Poland

Marek Moszyński
Politechnika Gdańska, Katedra Systemów Telemonitoringu, Gdańsk, Poland

Andrzej Stepnowski
Politechnika Gdańska, Katedra Systemów Telemonitoringu, Gdańsk, Poland

Key words:

Abstract: The modelling of surface and volume backscattering of a single-beam echosounder signals on sea floor using impulse response approach is presented. Kirchhoff (tangent plane) approximation is used in surface scattering modelling for approximately fiat sea bottom and small perturbation theory is applied to describe the volume backscattering. The influence of bottom physical features as well as the system parameters (operating frequency, beamwidth) on the shape of the sea bed impulse response and echo waveform is investigated. The results have revealed the differences for particular cases of bottom and acoustic system's parameters and they are important for validation of newly developed algorithms of echo signals processing for bottom classification.

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© Polish Acoustical Society - Gdansk Department, Polish Academy of Sciences. This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported. (CC BY-NC-SA 3.0)