Thank you for your advice!
I am a little bit confused about your method.
First, why it need to be normalized?
Second, what do you mean a sine function of the frequency? for example, I want to examine 1Hz, so the function is sin(2*pi*1*t)????
Thanks again!
I am now doing data processing of the frequency response tests such that a continuous sinusoidal steering wheel input with 0.3 - 2.5 Hz was applied. Then I want to use fft to derive data in frequency domain. For example, I want to know the value of yaw rate at certain phase lag. How to do this...