Radar for Vital Signs – Matlab Simulation
By looking at the table, it seems to me that the sampling rate is $2 \text{ MHz}$. I came to that from $\frac{\text{Samples Per Chirp}}{\text{Chirp Duration}}$, which also matches up with what I expected that this is what the paper calls the &quot;Fast Time Axis sampling rate&quot;. They may also show results for a $4 \text{ MHz}$ setup as well, see this excerpt from page 18 of the pdf:

A  text  file  containing  the  configurations  of  the  radar  must  be  provided to the radar at the boot up sequence. As mentioned, two different scenarios (measurement from back and front) are defined for the measurements of vital signs using the EVM. A couple of chirp parameters are different in the configurations. In the back configuration there is an ADCsampling rate of2 MHz (2000 Ksps) with 100 ADC samples per chirp, while there is an ADC sampling rate of 4 MHz (4000 Ksps) with 200 ADC samples per chirp in the front configuration. The sampling time or the chirp duration which is calculated from the division of number of ADC samples per chirp by ADC sampling rate for both configurations is 50 μs.

I read this to be the conventional sample rate that everybody thinks of. They also have the &quot;Slow Time Axis sampling rate&quot;, which is how often they take a frame of samples and feed that into their processing. I think I'd call this something different, like &quot;Frame Rate&quot;, since it really is independent of how many samples are taken per second. All this is explained on page 18-19.