Centroid-based sifting for empirical mode decomposition

Hong HONG; Xin-long WANG; Zhi-yong TAO; Shuan-ping DU

doi:10.1631/jzus.C1000037

Your Location：

Home >

Browse articles >

Centroid-based sifting for empirical mode decomposition

计算机与自动化 | Updated：2022-08-31

- Centroid-based sifting for empirical mode decomposition
- Centroid-based sifting for empirical mode decomposition
- 信息与电子工程前沿（英文） 2011年12卷第2期页码：88-95
- Affiliations：
  
  1.Key Laboratory of Modern Acoustics and Institute of Acoustics, Nanjing University, Nanjing 210093, China
  2.State Key Laboratory of Ocean Acoustics, Hangzhou Applied Acoustics Research Institute, Hangzhou 310012, China
- Author bio：
  
  E-mail:hongnju@gmail.com
- Funds：
- DOI：10.1631/jzus.C1000037
  中图分类号：
- 收稿：2010-02-25，
  
  修回：2010-12-30，
  
  录用：2010-05-20，
  
  纸质出版：2011-02
- Accepted：
Scan QR Code
Centroid-based sifting for empirical mode decomposition[J]. 信息与电子工程前沿（英文）, 2011,12(2):88-95.

Hong HONG, Xin-long WANG, Zhi-yong TAO, et al. Centroid-based sifting for empirical mode decomposition[J]. Frontiers of Information Technology & Electronic Engineering, 2011, 12(2): 88-95.
Centroid-based sifting for empirical mode decomposition[J]. 信息与电子工程前沿（英文）, 2011,12(2):88-95. DOI： 10.1631/jzus.C1000037.

Hong HONG, Xin-long WANG, Zhi-yong TAO, et al. Centroid-based sifting for empirical mode decomposition[J]. Frontiers of Information Technology & Electronic Engineering, 2011, 12(2): 88-95. DOI： 10.1631/jzus.C1000037.

摘要

Abstract

A novel sifting method based on the concept of the ‘local centroids’ of a signal is developed for empirical mode decomposition (EMD)

with the aim of reducing the mode-mixing eﬀect and decomposing those modes whose frequencies are within an octave. Instead of directly averaging the upper and lower envelopes

as suggested by the original EMD method

the proposed technique computes the local mean curve of a signal by interpolating a set of ‘local centroids’

which are integral averages over local segments between successive extrema of the signal. With the ‘centroid’-based sifting

EMD is capable of separating intrinsic modes of oscillatory components with their frequency ratio

even up to 0.8

thus greatly mitigating the eﬀect of mode mixing and enhancing the frequency resolving power. Inspection is also made to show that the integral property of the ‘centroid’-based sifting can make the decomposition more stable against noise interference.

关键词

Keywords

references

浏览量

Downloads

CSCD

文章被引用时，请邮件提醒。

Submit

工具集

关联资源

暂无数据