Hello TI teams,
Recently, I have been using MATLAB to build the DSP function for the FMCW mmWave radar on vital sign detection (BR & HR).
Now, I get the 32 sets of dechirped signal (beat signal) data (size is 1x1100) since my program sends 32 chirps to the target.
At this point, I want to build a range-slow time matrix. First, I applied FFT to all the beat signals I received. The size of my range-slow time matrix after the Range FFT is 32x1100.
But, in the phase extraction step, a few questions come to my mind.
1. How should I determine how much data are there in a single range bin? Does it base on the sampling frequency, sweep time, or the number of sent chirps?
2. To find the target range bin, we can simply choose the range bin which contains the largest spectrum. Is that right?
I have gone through all the TI tutorials about FMCW radar. I learn a lot from it. But, I still cannot find the answer to my query in it.
Thank you for reading this question.
Looking forward to your reply.
