I've got two signals which are consecutive received signals by a radar system. The signals' values are complex (in form $x+\textrm iy$). I have generated a trasmitted signal using the info available.

Now, I have to calculate the range and motion(if any) of the objects using comparision of these signals in MATLAB. Comparing the real part using xcorr in MATLAB, I got the range of the objects. I am strugling with motion of the objects. How can I find if the objects found (4 in my case) were moving or not. I think it has to do something with the phase comparision of the signals.

Any help is appreciated.