资源简介
EEMD的代码,EEMD是EMD的改进,通过加入高斯白噪声来避免模态混叠
代码片段和文件信息
% This is an EMD/EEMD program
%
% function allmode=eemd(YNstdNE)
%
% INPUT:
% Y: Inputted data;
% Nstd: ratio of the standard deviation of the added noise and that of Y;
% NE: Ensemble number for the EEMD
% OUTPUT:
% A matrix of N*(m+1) matrix where N is the length of the input
% data Y and m=fix(log2(N))-1. Column 1 is the original data columns 2 3 ...
% m are the IMFs from high to low frequency and comlumn (m+1) is the
% residual (over all trend).
%
% NOTE:
% It should be noted that when Nstd is set to zero and NE is set to 1 the
% program degenerates to a EMD program.
%
% References can be found in the “Reference“ section.
%
% The code is prepared by Zhaohua Wu. For questions please read the “Q&A“ section or
% contact
% zhwu@cola.iges.org
%
function allmode=eemd(YNstdNE)
xsize=length(Y);
dd=1:1:xsize;
Ystd=std(Y);
Y=Y/Ystd;
TNM=fix(log2(xsize))-1;
TNM2=TNM+2;
for kk=1:1:TNM2
fo
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