Here's a question related to the Doppler FFT. I went through the theory given in the first series of mmwave training videos (training.ti.com/mmwave-training-series, and am now trying to understand it better by means of simulation.
I take the DFT of an IF signal and get peaks corresponding to each object. I transmit multiple chirps, receive multiple IF signals whose DFT I take. I get peaks at the same position. Now I seek to measure the velocity of each object. So I take DFTs of the same range bins across chirps.
My question is, should I get peaks only in the Doppler FFTs corresponding to range bins where an object is present, or should I get it on all range bins regardless of whether an object is present or not.
Thanks and regards,
Chaitanya
