多尺度模糊熵matlab程序
时间: 2023-10-19 12:09:27 浏览: 222
以下是多尺度模糊熵的 MATLAB 程序:
```matlab
function [MFE, MSE] = multiscale_fuzzy_entropy(signal, m, r, scales)
% signal: 输入信号
% m: 模糊熵的阶数
% r: 模糊因子
% scales: 尺度数
N = length(signal);
MFE = zeros(scales, 1);
MSE = zeros(scales, 1);
for s = 1:scales
% 计算每个尺度下的子信号长度
L = floor(N/s);
% 初始化模糊熵和模糊矩阵
FE = zeros(L,1);
P = zeros(m+1, L);
for i = 1:L
% 提取子信号
sub_signal = signal((i-1)*s+1:i*s);
% 计算模糊矩阵
for j = 1:s
for k = 1:s
if abs(sub_signal(j)-sub_signal(k)) <= r
P(1, i) = P(1, i) + 1;
end
for q = 2:m+1
if abs(sub_signal(j)-sub_signal(k)) <= r && abs(sub_signal(j+q-1)-sub_signal(k+q-1)) <= r
P(q, i) = P(q, i) + 1;
end
end
end
end
% 计算模糊熵
for q = 1:m+1
P(q, i) = P(q, i)/(s*(s-1));
FE(i) = FE(i) - P(q, i)*log(P(q, i));
end
end
% 计算多尺度模糊熵
MFE(s) = sum(FE)/L;
MSE(s) = log(MFE(s));
end
end
```
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