现代电子技术Issue(22)：50-52,56,4.
几种改善EMD端点效应方法的比较研究
Study on methods for improving EMD end effect
摘要
Abstract
One of the most important problems in empirical mode decomposition(EMD)applications is the improvement of the end effect. Several methods for improving the end effect are proposed. Five common methods(mirror image method,polyno-mial fitting method,extremum extending method,parallel extending method and boundary local characteristic scale extending method) are investigated in this paper. For evaluating the end effect,the similarity coefficient and average relative error of de-composed signal and original signal,and the operation time are taken as evaluation criterions of the end processing methods. Simulation results indicate that the extremum extending method is the better option for quasi periodic signal.关键词
经验模态分解/端点效应/评价指标/相似系数/平均相对误差Key words
empirical mode decomposition/end effect/evaluation criterion/similarity coefficient/average relative error分类
信息技术与安全科学引用本文复制引用
祁艳杰,王黎明,杨泽辉,付朝霞..几种改善EMD端点效应方法的比较研究[J].现代电子技术,2013,(22):50-52,56,4.基金项目
国家“973”计划资助项目（2011CB311804）；国家自然科学基金资助项目（61227003；61171179；11247244；61071193）；山西省自然科学基金（2013011017-8）；山西省软科学研究项目 （）
