全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

基于经验模式分解的去噪方法

Keywords: 经验模式分解,emd滤波去噪法,非平稳信号

Full-Text   Cite this paper   Add to My Lib

Abstract:

?根据经验模式分解(empiricalmodedecomposition,简称emd)方法分解白噪声而得到的本征模式函数分量的能量密度与其平均周期的乘积为-常量这-特性,本文建立了-种滤波去噪方法,即emd滤波去噪法。通过模拟数据试验分析表明:emd可以作为-种去噪滤波器,emd方法的去噪能力与噪声水平有关,对于噪声方差小于信号振幅且无高频信号时,其滤波去噪的效果良好;emd方法的去噪能力还与待滤波数据中是否含有高频信号有关,而当噪声水平较大且待滤波的序列中又具有高频信号时,滤波曲线会出现明显的失真现象。

References

[1]  huangneetal.theempiricalmodedecompositionandhilbertspectrumfornonlinearandnon-stationarytimeseriesanalysis.proceedingsoftheroyalsocietyoflondonseriesa,1998,954:903-995[2]huangneetal.anewviewofnonlinearwaterwaves:thehilbertspectrum.amnurevfluidmech,1999,31;147-157[3]胡劲松等.基于经验模态分解的旋转机械振动信号滤波技术研究.振动、测试与诊断,2003,23(2):96-98[4]kathleentcoughlin.stratosphericandtroposphericsignalsextractedusingtheempiricalmodedecompositionmethod.washingtonamerican;universityofwashington,2003[5]keuong.speechprocessingusingtheempiricalmodedecompositionandthehilberttransform.montrealcanada;concordiauniversity,2004[6]nuncsjcetal.textureanalysisbasedonlocalanalysisofthebidimensionalempiricalmodedecomposition.machinevisionandapplications,2004,16(3):177-188[7]岳焕印,郭华东等.经验模态分解技术在sar十涉图滤波中的应用.高技术通讯,2002,12;37-40[8]sinclairsandpegramuus.empiricalmodedecompositionin2-dspaceandtimeatoolforspace-timerainfallanalysisandsnowcasting.hydrologyandearthsystemsciemesdiscussions,2002,2:289-318[9]katiecoughlin,kakittung.empiricalmodedecompositionofclimatevariability.wspc(c),2004[10]邓拥军等.emd方法及hilbcrt变换中边界问题的处理.科学通报,2001,46(3);257-263[11]dcngyongjun,wangwci,qianchcngchunetal.theendprobleminemdmethodhilberttransform.sciemes,chinapress,2001,46(3):257-263[12]huangneetal.aconfidencelimitfortheempiricalmodedecompositionandhilbertspectralanalysis.proceedingsoftheroyalsocietyoflondonseriesa,2003,459;2317-2345[13]flandrinp,rillinguetal.empiricalmodedecompositionasfilterbank.ieeesignalprocesslett,2003,11:112-114[14]wugandhuangne.astudyofthecharacteristicsofwhitenoiseusingtheempiricalmodedecomposition.proceedingsoftheroyalsocietyoflondonseriesa,2001,160:1597-1611
[2]  huangneetal.theempiricalmodedecompositionandhilbertspectrumfornonlinearandnon-stationarytimeseriesanalysis.proceedingsoftheroyalsocietyoflondonseriesa,1998,954:903-995
[3]  huangneetal.anewviewofnonlinearwaterwaves:thehilbertspectrum.amnurevfluidmech,1999,31;147-157
[4]  胡劲松等.基于经验模态分解的旋转机械振动信号滤波技术研究.振动、测试与诊断,2003,23(2):96-98
[5]  kathleentcoughlin.stratosphericandtroposphericsignalsextractedusingtheempiricalmodedecompositionmethod.washingtonamerican;universityofwashington,2003
[6]  keuong.speechprocessingusingtheempiricalmodedecompositionandthehilberttransform.montrealcanada;concordiauniversity,2004
[7]  nuncsjcetal.textureanalysisbasedonlocalanalysisofthebidimensionalempiricalmodedecomposition.machinevisionandapplications,2004,16(3):177-188
[8]  岳焕印,郭华东等.经验模态分解技术在sar十涉图滤波中的应用.高技术通讯,2002,12;37-40
[9]  sinclairsandpegramuus.empiricalmodedecompositionin2-dspaceandtimeatoolforspace-timerainfallanalysisandsnowcasting.hydrologyandearthsystemsciemesdiscussions,2002,2:289-318
[10]  katiecoughlin,kakittung.empiricalmodedecompositionofclimatevariability.wspc(c),2004
[11]  邓拥军等.emd方法及hilbcrt变换中边界问题的处理.科学通报,2001,46(3);257-263
[12]  dcngyongjun,wangwci,qianchcngchunetal.theendprobleminemdmethodhilberttransform.sciemes,chinapress,2001,46(3):257-263
[13]  huangneetal.aconfidencelimitfortheempiricalmodedecompositionandhilbertspectralanalysis.proceedingsoftheroyalsocietyoflondonseriesa,2003,459;2317-2345
[14]  flandrinp,rillinguetal.empiricalmodedecompositionasfilterbank.ieeesignalprocesslett,2003,11:112-114
[15]  wugandhuangne.astudyofthecharacteristicsofwhitenoiseusingtheempiricalmodedecomposition.proceedingsoftheroyalsocietyoflondonseriesa,2001,160:1597-1611

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133