www.gusucode.com > signal 案例源码程序 matlab代码 > signal/ModifiedDataAndAutocorrelationMatricesExample.m
%% Modified Data and Autocorrelation Matrices % Generate a signal composed of three complex exponentials embedded in % white Gaussian noise. Compute the data and autocorrelation matrices using % the |'modified'| method. % Copyright 2015 The MathWorks, Inc. %% n = 0:99; s = exp(i*pi/2*n)+2*exp(i*pi/4*n)+exp(i*pi/3*n)+randn(1,100); m = 12; [X,R] = corrmtx(s,m,'modified'); %% % Plot the real and imaginary parts of the autocorrelation matrix. [A,B] = ndgrid(1:m+1); subplot(2,1,1) plot3(A,B,real(R)) title('Re(R)') subplot(2,1,2) plot3(A,B,imag(R)) title('Im(R)')