matlab信息光学应用

% sinc一维图形

x= -5.5:0.01:5.5;

sinc=sin(pi*x)./(pi*x);

plot(x,sinc)

axis([-5.5 5.5 -0.3 1.1])

grid on

xlabel('x')

ylabel('sinc (x)')

% sinc二维图形：

x= -5.5:0.01:5.5;

y= -5.5:0.01:5.5;

[X,Y]=meshgrid(x,y);

Z=(sin(pi*X)./(pi*X)).*(sin(pi*Y)./(pi*Y)); mesh(X,Y,Z)

%axis([-5.5 5.5 -5.5 5.5])

grid on

xlabel('X'),ylabel('Y'),zlabel('ZY')

% 矩形一维图形

x0=2.5;

x=-3.5:0.001:5;

a=2;

y=rectpuls(x-x0,a);

plot(x,y,'k')

axis([0 5 -0.05 1.1]) xlabel('x')

ylabel('rect(x)')

% 矩形二维图形

%x0=2.5;

x=-3.5:0.05:5;

y=-3.5:0.05:5;

[X,Y]=meshgrid(x,y);

a=2;

Z=(rectpuls(X,a)).*(rectpuls(Y,a)); mesh(X,Y,Z)

grid on

xlabel('X'),ylabel('Y'),zlabel('Z')