文章摘要
盖强,殷福亮.二维信号Hilbert-Huang变换时频谱研究[J].,2009,(3):445-448
二维信号Hilbert-Huang变换时频谱研究
Study of 2-dimensional signals time-frequency spectrum of Hilbert-Huang transform
  
DOI:10.7511/dllgxb200903025
中文关键词: Hilbert-Huang变换  二维信号  时频谱
英文关键词: Hilbert-Huang transform  2-dimensional signals  time-frequency spectrum
基金项目:中国博士后科学基金资助项目(20060400969).
作者单位
盖强,殷福亮  
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中文摘要:
      Hilbert-Huang变换(HHT)自适应时频分析是处理非平稳数据较为有效的新方法.根据一维Hilbert-Huang变换信号时频谱变换原理,研究了二维信号的分解和时频谱分析方法.通过把二维信号按指定方向进行一维分解和时频谱变换,构造出二维信号时间(空间)-频率-能量谱图,使二维信号在指定方向的时频特性能正确地显示出来,从而拓展了Hilbert-Huang变换的应用范围.该方法为分析非平稳二维信号提供了新的工具.
英文摘要:
      Hilbert-Huang transform (HHT) is a new effective method for processing non-stationary data. According to 1-dimensional Hilbert-Huang transform time-frequency spectrum analyzing principle, 2-dimensional signals time-frequency spectrum analyzing principle of Hilbert-Huang transform is put forward. Through decomposing and time-frequency transforming along a designating direction, a time (space)-frequency-energy distribution of 2-dimensional signals can be got, and the 2-dimensional signals time-frequency characters can be displayed correctly. It makes the Hilbert-Huang transform more universal than it was before. It provides a new tool for processing 2-dimensional non-stationary signals.
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