Spectral characterization of the hydroacoustic field of the vessel in the river environment

 

Miodrag Vračar, MSc, (Eng)

 

Acoustic noise generated by vessel motion in the test range on a river is the subject of this paper. The hydroacoustic field of the vessel is analyzed using different methods. The analysis was performed in time and frequency domain. The acoustic signals are analyzed using classical concept of the spectral analysis, parametric models of random processes and bispectrum analysis. Particular interest was dedicated to identifying narrow band contributions to the total spectrum of the ship hydro-acoustic noise.

 

Key words: hydroacoustics, hydroacoustic field, hydroacoustic noise, ship, river, hydroacoustic signal, signal spectrum, bispectrum, signal identification.