General analysis of broadband signal spatial filtration

• Autorzy: Salamon R. , Rudnicki M. , Schmidt J.
• Języki publikacji: EN

Abstrakty

EN

The majority of underwater acoustic systems use narrow band sounding signals. Consequently, there is extensive knowledge on how the relevant spatial filters should be analysed and designed. The difficulty begins when the sounding signal has a broad spectrum. Applying the results of narrow band signal analysis to broadband signals leads to serious errors. The same is true for spatial filtration methods when applied to narrow band signals. The article presents a general method for analysing spatial filters designed for broadband signals. It also gives an assessment of the errors caused by applying spatial filtration methods designed for narrow band signals.

Słowa kluczowe

EN

acoustics; spatial filtration; underwater acoustic

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2003
• Tom: Vol. 6
• Strony: 251--260
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Salamon R.

• Gdansk University of Technology, Faculty of Electronics, Informatics and Telecommunications, Department of Acoustics, Gdańsk, Poland

autor

Rudnicki M.

• Gdansk University of Technology, Faculty of Electronics, Informatics and Telecommunications, Department of Acoustics, Gdańsk, Poland

autor

Schmidt J.

• Gdansk University of Technology, Faculty of Electronics, Informatics and Telecommunications, Department of Acoustics, Gdańsk, Poland

Bibliografia

• 1. A. Elminowicz, Wideband beamformer in the frequency domain. HYDROACOUSTICS, vol.6. pp. 235-242, 2003.
• 2. T. Janowski, A. Kotłowski, E. Porosińska, Theoretical problems of the wideband sonar time-spatial filtration. HYDROACOUSTICS, vol.6. pp. 221-228, 2003.
• 3. T. Janowski, A. Kotłowski, W. Męciński, M. Okuniewski. Simulation ofthe timespatia! fi!tration a!gorithm by 2d FFT expanded method and its properties. HYDROACOUSTICS, vol.6. pp. 229-234, 2003.
• 4. R. O. Nielsen Sonar signal processing, Artech House, 1991.