(混沌序列统计特性)块内频率测试基于matlab实现

    clc;clear;
    h=0.002;t=800;n=1000000;a=10;b=8/3;c=28;r=-1;x0=1.1;y0=2.2;z0=3.3;w0=4.4;
    s=zeros(1,n);
    
    for i=1:n+t
       K11=a*(y0-x0)+w0;K12=a*(y0-(x0+K11*h/2))+w0;
    K13=a*(y0-(x0+K12*h/2))+w0;K14=a*(y0-(x0+h*K13))+w0;
    x1=x0+(K11+2*K12+2*K13+K14)*h/6;
     
    K21=c*x1-y0-x1*z0;K22=c*x1-(y0+K21*h/2)-x1*z0;
    K23=c*x1-(y0+K22*h/2)-x1*z0;K24=c*x1-(y0+h*K23)-x1*z0;
    y1=y0+(K21+2*K22+2*K23+K24)*h/6;
    
    K31=x1*y1-b*z0;K32=x1*y1-b*(z0+K31*h/2);
    K33=x1*y1-b*(z0+K32*h/2);K34=x1*y1-b*(z0+h*K33);
    z1=z0+(K31+2*K3