Tracking of the broadband source of the underwater noise in the very shallow water conditions

• Autorzy: Grelowska G. , Kozaczka E.
• Języki publikacji: EN

Abstrakty

EN

The paper contains the results, both theoretical and experimental, connected with the tracking of the underwater noise source as small ships, pontoon, diver and so on. The problem of security in the shallow water area is the challenge for underwater acousticians. In this paper there is taken into account the detection of the sources that move on the surface of the sea or underwater in shallow and very shallow water. The main goal deals with characterization of the sound propagation at the shallow water channel. The next problem is formulation of the sound propagation inside of this acoustic duct including normal mode creations and dispersion of the acoustic energy. When we take into account the small ships noise the two main sources are analyzed. The first one is the vibration energy produced by the mechanisms located inside of the ship hull. The acoustical energy is transformed through structural elements of the hull to surrounding water. This energy propagates as broadband underwater noise. The next source is the ship propeller. The sources of the underwater noise give the some deposit to the total acoustical energy that means the ambient noise. The problem that should be solved is to discover these acoustical disturbances along with their classification, identification and tracking.

Słowa kluczowe

EN

broadband signals; shallow water; sound propagation

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2015
• Tom: Vol. 18
• Strony: 77--86
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Grelowska G.

• Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland

autor

Kozaczka E.

• Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland
• Polish Naval Academy, Śmidowicza 69, 81-103 Gdynia, Poland

Bibliografia

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