Hi TI:
We had refer document "Programming Chirp Parameters in TI Radar Devices" section 2.2.1 for "Unambiguous max velocity" value calculation (as below pic shown),

λ=C/f = 3x10^8/ 76.5GHz = 0.00391
Tc=idle time+ramp end time= 8us+9.54us=17.54us
so the calculated unambiguous max velocity=λ/4Tc=5.56(m/s)
But this calculated value can't match the value of "Maximum radial velocity" shown in mmwave demo visualizer "18.75(m/s)", as below pic shown.
Our CFG profile is also attached,
Could you please help to take a look of this problem?
Thank you~
