function [korr] =korrelation();
s1 = zeros(1,100);
s2 = zeros(1,100);
s1(40:50) = 1;
s2(60:70) = 1;
korr = real(ifft(fft(s1).*conj(fft(s2))));
plot (korr, 'DisplayName', 'korr', 'YDataSource', 'korr'); figure(gcf)
end