I came across one blog who suggested to convert from accelerometer data to position data from frequency domain. Here are the steps that the original individual suggested:
- Remove the mean from the accel. data
- Take the Fourier transform (FFT) of the accel. data.
- Convert the transformed accel. data to displacement data by dividing each element by -omega^2, where omega is the frequency band.
- Now take the inverse FFT to get back to the time-domain and scale your result.
I am wondering if anyone have ever used this method before, and may I know your algorithm? I am not particularly sure on what does it means by Step 3 - frequency band?
p.s. I hope this question is relevant here.