欢迎访问《兵工学报》官方网站,今天是

兵工学报 ›› 2004, Vol. 25 ›› Issue (2): 238-241.

• 研究简报 • 上一篇    下一篇

基于1 1/2维谱的舰船辐射噪声低频线谱成分提取

李亚安,冯西安,樊养余,黄建国   

  1. 西北工业大学航海工程学院,陕西西安,710072
  • 收稿日期:2003-03-01 修回日期:2004-02-01 上线日期:2014-12-25
  • 通讯作者: 李亚安
  • 基金资助:
    国家自然科学基金资助项目(6U272076)

Extration of Low Frequency Line Spectrum of Ship Radiated Noise Based on the 1 1/2 D Spectrum

Li Yaan, Feng Xian, Fan Yangyu, Huang Jianguo   

  1. Northwestern Polytechnical University, Xi'an, 710072
  • Received:2003-03-01 Revised:2004-02-01 Online:2014-12-25
  • Contact: Li Yaan

摘要: 分析了1+1/2维谱具有的几个特殊性质,即抑制高斯噪声和对称分布噪声加强信号的基频分量以及剔除非耦合相位的谐波分量。通过计算实际舰船噪声的1+1/2维谱,并利用它所具有的特征参数,对舰船信号进行了分类与识别,达到了较好的识别效果,为进一步开展水下目标探测与识别研究打下了良好基础。

关键词: 声学 , 1+1/2维谱 , 舰船噪声 , 特征提取

Abstract: Special properties of a I spectrum were analyzed. By means of these properties, the Gaussian noise and symmetrically distributed noise can be restrained. The fundamental frequency compo?nent of the harmonic signals can be enhanced and non-quadratic phase coupling harmonic components can be eliminated. By calculating the I spectrum of actual ship radiated noise, fine results in classification and identification have been achieved. Tins will be of help in the research of detecting and identifying underwa?ter objects.

Key words: acoustics , I+1/2D spectrum , ship radiated noise , feature extraction

中图分类号: