CASIA OpenIR
一种新的EMD包络定义及拟合方法
莫家玲1; 何经伟1; 胡维平1; 胡晰远2
Source Publication计算机应用研究
ISSN1001-3695
2016
Volume033Issue:005Pages:1457
Abstract包络拟合是经验模态分解(empirical mode decomposition,EMD)中非常关键的一步。针对经典EMD利用信号极值点的三次样条插值构成的包络经常会与信号相交从而破坏包络的定义,在分析包络与性质的基础上提出了一种新的EMD包络拟合方法。该方法可以根据经典EMD包络通过泰勒展开计算出具有相同一阶导的信号和包络的切点与原极值点的偏移量,然后用这些切点取代极值点并通过Hermite多项式插值得到新包络。数值实验结果表明该方法的正交性及能量保存度指标有明显的改善,其拟合的包络线更接近于理想包络线。
Language英语
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/37712
Collection中国科学院自动化研究所
Affiliation1.广西师范大学
2.中国科学院自动化研究所
Recommended Citation
GB/T 7714
莫家玲,何经伟,胡维平,等. 一种新的EMD包络定义及拟合方法[J]. 计算机应用研究,2016,033(005):1457.
APA 莫家玲,何经伟,胡维平,&胡晰远.(2016).一种新的EMD包络定义及拟合方法.计算机应用研究,033(005),1457.
MLA 莫家玲,et al."一种新的EMD包络定义及拟合方法".计算机应用研究 033.005(2016):1457.
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