Archives of Acoustics, 32, 4(S), pp. 313-318, 2007

Modeling of narrow and wideband signals scattering by randomly distributed scattering points

Andrzej Elminowicz
R&D Marine Technology Centre, Dickmana 62, 81-109 Gdynia
Poland

Leonard Zajączkowski
R&D Marine Technology Centre, Dickmana 62, 81-109 Gdynia
Poland

Presented in the paper issue of surface and volume scattering of acoustic wave in marine
environment is fundamental problem related to mono-, bi- and multistatic acoustic systems
operating in littoral sea. Reverberation creating as a result of the scattering has a significantly
influence on the small target detection. Modeling of narrow and wideband signal scattering
has been carried out using MATLAB. To solve the issue we accepted that scattering occurred
on randomly distributed points which generated scattering waves received and summed in
receiver. Density and arrangement of the points is a measure of environment scattering property.
The analyses, by signal processing in matched filter, were made for LFM, HFM and CW
signals (for comparison). The effect of signal parameters on scattering was investigated also.
Keywords: scattering, reverberation.
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