gusucode.com > UWB_matlab源码程序 > CP0101/cp0101_genrect.m
% % FUNCTION 1.1 : "cp0101_genrect" % % Generates a unitary amplitude rectangular waveform % that is modulated by a sinusoid at frequency 'f0' % 'signal' is the output waveform % 'dt' is the sampling period % % Programmed by Guerino Giancola % function [signal,dt] = cp0101_genrect % ---------------------------- % Step Zero - Input parameters % ---------------------------- width = 1e-1; % width of the rectangle [s] points = 1000; % number of samples for representing the rectangle f0 = 0; % carrier frequency [Hz] % ---------------------------- % Step One - Output evaluation % ---------------------------- dt = width / points; % sampling period signal = zeros(1,5*points); signal(2*points:3*points-1)=ones(1,points); mod=cos(2.*pi.*f0.*linspace(1,5*width,5*points)); signal=signal.*mod; % --------------------------- % Step Two - Graphical output % --------------------------- figure(1) time=linspace(-2*width,3*width,5*points); P1=plot(time,signal); set(P1,'LineWidth',[2]); axis([-2*width 3*width -1.2 1.2]); AX=gca; set(AX,'FontSize',12); X=xlabel('Time [s]'); set(X,'FontSize',14); Y=ylabel('Amplitude [V]'); set(Y,'FontSize',14);