matlab做傅立叶变换用MATLAB做傅立叶变换,频谱图像不正确 T=4;N=400;t=linspace(-T/2,T/2-T/N,N)';x=sin(pi*t)./(pi*t);h=cos(100*pi*t);y=x+h;z=y+0.5*y.^2;OMG=16*pi;K=200;omg=linspace(-OMG/2,OMG/2-T/N,K)';Z=0*OMG;for k=1:KZ(k)=0
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 14:24:59
![matlab做傅立叶变换用MATLAB做傅立叶变换,频谱图像不正确 T=4;N=400;t=linspace(-T/2,T/2-T/N,N)';x=sin(pi*t)./(pi*t);h=cos(100*pi*t);y=x+h;z=y+0.5*y.^2;OMG=16*pi;K=200;omg=linspace(-OMG/2,OMG/2-T/N,K)';Z=0*OMG;for k=1:KZ(k)=0](/uploads/image/z/8324176-40-6.jpg?t=matlab%E5%81%9A%E5%82%85%E7%AB%8B%E5%8F%B6%E5%8F%98%E6%8D%A2%E7%94%A8MATLAB%E5%81%9A%E5%82%85%E7%AB%8B%E5%8F%B6%E5%8F%98%E6%8D%A2%2C%E9%A2%91%E8%B0%B1%E5%9B%BE%E5%83%8F%E4%B8%8D%E6%AD%A3%E7%A1%AE+++T%3D4%3BN%3D400%3Bt%3Dlinspace%28-T%2F2%2CT%2F2-T%2FN%2CN%29%26%2339%3B%3Bx%3Dsin%28pi%2At%29.%2F%28pi%2At%29%3Bh%3Dcos%28100%2Api%2At%29%3By%3Dx%2Bh%3Bz%3Dy%2B0.5%2Ay.%5E2%3BOMG%3D16%2Api%3BK%3D200%3Bomg%3Dlinspace%28-OMG%2F2%2COMG%2F2-T%2FN%2CK%29%26%2339%3B%3BZ%3D0%2AOMG%3Bfor+k%3D1%3AKZ%28k%29%3D0)
matlab做傅立叶变换用MATLAB做傅立叶变换,频谱图像不正确 T=4;N=400;t=linspace(-T/2,T/2-T/N,N)';x=sin(pi*t)./(pi*t);h=cos(100*pi*t);y=x+h;z=y+0.5*y.^2;OMG=16*pi;K=200;omg=linspace(-OMG/2,OMG/2-T/N,K)';Z=0*OMG;for k=1:KZ(k)=0
matlab做傅立叶变换
用MATLAB做傅立叶变换,频谱图像不正确
T=4;
N=400;
t=linspace(-T/2,T/2-T/N,N)';
x=sin(pi*t)./(pi*t);
h=cos(100*pi*t);
y=x+h;
z=y+0.5*y.^2;
OMG=16*pi;
K=200;
omg=linspace(-OMG/2,OMG/2-T/N,K)';
Z=0*OMG;
for k=1:K
Z(k)=0;
for n=1:N
Z(k)=Z(k)+T/N*z(n)*exp(-j*om
g(k)*t(n));
end
end
zs=0*t;
for n=1:N
zs(n)=0;
for k=1:K
zs(n)=zs(n)+OMG/2/pi/K*Z(k)*exp(j*omg(k)*t(n));
end
end
plot(omg,Z)
matlab做傅立叶变换用MATLAB做傅立叶变换,频谱图像不正确 T=4;N=400;t=linspace(-T/2,T/2-T/N,N)';x=sin(pi*t)./(pi*t);h=cos(100*pi*t);y=x+h;z=y+0.5*y.^2;OMG=16*pi;K=200;omg=linspace(-OMG/2,OMG/2-T/N,K)';Z=0*OMG;for k=1:KZ(k)=0
t=linspace(-T/2,T/2,N)';
这一行这样改就可以.
按原来的写法,t里会出现一个0,带入exp函数后导致出错.