Key Laboratory of Acoustics and Institute of Acoustics, Nanjing University, Nanjing 210093, China.
J Acoust Soc Am. 2009 Dec;126(6):3106-13. doi: 10.1121/1.3244987.
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.
调制分析是舰船噪声目标分类与识别的一个重要问题。然而，用于分析的调制空化噪声往往淹没在强背景噪声中，难以分离出来。本文提出了一种结合经验模态分解和奇异值分解来自适应提取调制空化噪声的方法。合成信号和实际信号的结果表明了该方法的实用性和有效性。
