Simulation model of ship-radiated broadband noise

Author

Luo, Jian ; Yang, Yi

Author_Institution

Sch. of Marine Eng., Northwestern Polytech. Univ., Xian, China

fYear

2011

fDate

14-16 Sept. 2011

Firstpage

1

Lastpage

5

Abstract

In this thesis, the statistical characteristics of ship-radiated noise are discussed. Then, a mathematical model of the noise reconstruction is established for given sea depth and straight distance. The model includes the main characteristics of ship-radiated broadband noise: the continuous power spectrum, the line spectrum, the envelope spectrum, the total radiated sound power and the sound level through characteristic considering the shielding effect of hull and wake. These features can be used in other research such as reconstruction of the noise waveform which contains the characteristics above. The main parameters of model are as follows: Frequency Span: 3Hz~20kHz; Sea Depth: 30m~1000m; Straight Distance: 1000m; Ship Tonnage: 100 tons~100,000 tons; Apply Ship: Watercraft with a normal speed.

Keywords

acoustic noise; ships; statistical analysis; underwater acoustic communication; continuous power spectrum; distance 1000 m; envelope spectrum; frequency 3 Hz to 20 kHz; hull shielding effect; line spectrum; mathematical model; noise waveform reconstruction; sea depth; ship-radiated broadband noise simulation model; sound level; statistical characteristics; straight distance; total radiated sound power; Frequency domain analysis; Marine vehicles; Mathematical model; Noise; Propellers; Resonant frequency; Time domain analysis; mathematical model; ship radiated noise; simulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, Communications and Computing (ICSPCC), 2011 IEEE International Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-4577-0893-0

Type

conf

DOI

10.1109/ICSPCC.2011.6061632

Filename

6061632