fft for unequal step size data

6 ビュー (過去 30 日間)
krishan sharma
krishan sharma 2013 年 2 月 11 日
I have encountered the same problem as you got long back.
"I have a signal that is about 3000 points long and sampled using different sampling frequencies. The smallest sample time is about 1.2e-24 seconds while the largest sample time is 0.1 seconds. The sample time rarely stays the same and varies like crazy between the two extremes. This signal is output of a Simulink block diagram which essentially uses a variable time step solver.
Can someone suggest a method by which to find the FFT of this signal ? The FFT block in the DSP blockset demands a constant sample time.
*sample time = reciprocal of sampling frequency." from your previous discussion on matlab center , i have found out that clean algorithm can solve the purpose of unequal time series . but not able to find matlab code for clean algo. can anybody provide me the code. or any other option for the same.
please help
Thanx in advance.
KG sharma

回答 (0 件)

Community Treasure Hunt

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

Start Hunting!

Translated by