文章摘要
连梓旭,孙向前.基于Gammatone滤波器组与子带瞬时频率的水声目标特征提取[J].声学技术,2022,41(6):827~832
基于Gammatone滤波器组与子带瞬时频率的水声目标特征提取
Feature extraction of underwater acoustic target based on Gammatone filter-bank and subband instantaneous frequency
投稿时间:2021-07-27  修订日期:2021-09-01
DOI:10.16300/j.cnki.1000-3630.2022.06.006
中文关键词: 伽玛通(Gammatone)滤波器组  子带瞬时频率  特征提取  水声目标识别
英文关键词: Gammatone filter-bank  subband instantaneous frequency  feature extraction  underwater acoustic target recognition
基金项目:
作者单位E-mail
连梓旭 91388部队 44分队, 广东湛江 524000 330322525@qq.com 
孙向前 91388部队 44分队, 广东湛江 524000  
摘要点击次数: 412
全文下载次数: 742
中文摘要:
      水声目标识别是现代海战中的关键环节,具有重要的军事应用价值。针对海洋环境的复杂性及多变性,文章以模仿人耳听觉感知机理为基础,提出了基于伽玛通(Gammatone)频率瞬时幅频系数的特征提取方法。该方法通过Gammatone滤波器组模拟人耳基底膜对信号的分解、处理过程,在各子带输出信号中提取目标的子带瞬时频率特征,并与传统的瞬时幅度特征相结合,从而更加全面地反映目标的固有属性。利用支持向量机对四类实测水声目标辐射噪声数据进行了识别实验,结果表明,文章的特征提取算法能够较好地抑制噪声,具有较强的鲁棒性。
英文摘要:
      Underwater acoustic target recognition is the key part in modern naval battle and has important military application value. In this paper, by considering the complexity and variability of underwater environment, a feature extraction method imitating the mechanism of human auditory perception is presented based on Gammatone frequency instantaneous amplitude and frequency coefficients. The Gammatone filter-bank is used to simulate the process of signal decomposition and processing of ear basement membrane, and the subband instantaneous frequency features of the target extracted from the outputs of Gammatone filter-bank are concatenated with the traditional instantaneous amplitude features to fully reflect the inherent nature of the target. The results of recognition experiments on the measured target data show that the proposed feature extraction method can suppress noise and has good robustness.
查看全文   查看/发表评论  下载PDF阅读器
关闭