Adaptive extraction of modulation for cavitation noise.
Modulation analysis is an important issue in target classification and identification for ship-radiated noise. However, the modulated cavitation noise sought for analyzing is always submerged under strong ambient noise and difficult to be separated out. In this paper, an approach is proposed to extract the modulated cavitation noise adaptively by combining empirical mode decomposition and singular value decomposition. The results for both synthetical and practical signals demonstrate the practicability and effectivity of the approach.
Bao
Fei
F
Key Laboratory of Acoustics and Institute of Acoustics, Nanjing University, Nanjing 210093, China. baofeinju@gmail.com
Wang
Xinlong
X
Tao
Zhiyong
Z
Wang
Qingfu
Q
Du
Shuanping
S