文章摘要
谢骏,胡均川.舰船噪声听觉节奏特征[J].,2008,27(6):444-448
舰船噪声听觉节奏特征
Audition rhythm feature of vessel’s noise
  
中文摘要:
      舰船噪声调制包络能反映舰船噪声听觉节奏特征,但在对其进行谱分析和特征提取过程中会损失部分信息。直接将舰船噪声包络可视化,并采用简单的人机交互提取特征量,对噪声分析和识别是有利的。包络分析采用多子带融合方法,将"最优"调制包络看作一种随机过程,并将舰船噪声的多子带检波信号看作是对"最优"调制包络的一次观测,对其作循环相关,用有限次观测的集种平均作为"最优"包络的估计,从而得到多子带融合包络,舰船噪声实测数据验证了该方法的有效性。
英文摘要:
      Modulation envelop of vessel’s noise is a basis of audition rhythm.Some im- portant information losses occur when spectral analysis and feature extraction are carried out.It is helpful for noise analysis and recognition to visualize the envelop and extract fea- ture by simple man-machine conversation.A multi-bandpass fusion approach to analyse the envelop is presented.Optimization modulation envelop is treated as a random process and multi-bandpass modulation envelop of vessel’s noise is treated as observation of optimiza- tion modulation envelop.Cyclic self-correlation functions of finite observations are calculat- ed and averaged.The average is the modulation envelop spectrum of multi-bandpass fusion and is treated as estimate of optimization modulation envelop.The experimental results based on real data from vessel’s noise show that the method and the algorithm proposed are effective.
DOI:10.11684/j.issn.1000-310X.2008.06.007
中文关键词: 调制包络谱  听觉节奏  特征提取  舰船噪声  多子带融合  水下目标识别
英文关键词: Modulation envelop spectrum  Audition rhythm  Feature extraction  Vessel’s noise  Multi-bandpass fusion  Underwater target recognition
基金项目:国防预研基金(No.51303060403)
作者单位
谢骏 海军潜艇学院战术水声数据中心,青岛,266071 
胡均川 海军潜艇学院战术水声数据中心,青岛,266071 
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