Plotting dirac delta function's spectrum
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I used the following code to plot the spectrum of some functions. but it doesn't work for the function dirac(t-t0) at t0=0. How can I fix it?
syms t w;
syms g h U;
g(w)=fourier(dirac(t));
h=abs(g);
w=-10:.5:10.1;
U=angle(g);
figure;
plot(w, subs(h));
figure;
plot(w,subs(U));
1 个评论
Marcos Duraes
2019-4-30
编辑：Marcos Duraes
2019-4-30
%Para plotar a o gráfico de uma variable type syms utilize a função fplot(); Logo.
syms t w;
syms g h U;
g(w)=fourier(dirac(t));
h=abs(g);
U=angle(g);
figure;
fplot(g);
采纳的回答
Star Strider
2017-11-3
1 个投票
The Fourier (and Laplace) transforms of the Dirac delta function are uniformly 1 for all omega (or ‘s’).
That is the result you get in ‘g(w)’.
2 个评论
geometry geometry
2017-11-3
Star Strider
2017-11-3
It does if you use fplot rather than plot:
syms t w g h U;
g(w)=fourier(dirac(t));
h=abs(g);
w=-10:.5:10.1;
U=angle(g);
figure;
fplot(g)
figure;
fplot(U)
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