Title :
Simulation model of ship-radiated broadband noise
Author :
Luo, Jian ; Yang, Yi
Author_Institution :
Sch. of Marine Eng., Northwestern Polytech. Univ., Xian, China
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;
Conference_Titel :
Signal Processing, Communications and Computing (ICSPCC), 2011 IEEE International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4577-0893-0
DOI :
10.1109/ICSPCC.2011.6061632
