fft of a complex chirp signal and plot the fft result

5 次查看（过去 30 天）
alex
alex 2021-12-8
Hello scientists. I want to compute fft (fast fourie transform) of a complex chirp signal in matlab. I know that because the signal is complex, I should compute double sided fft. But I do not know how to calculate frequency bins for fft plot of the complex chirp signal. according to niquest theorem if my sampling frequency is Fs, should I remove frequencies higher than Fs/2. So when I have nfft = 256 fft samples, and sampling frequency of 10Mega Hz, how should I calculate frequency bins (espacially start and end of frequency points) for fft plot (amplitude-frequency plot)? thanks for your consideration.

请先登录，再回答此问题。

回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Fourier Analysis and Filtering 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by