Finding range from the RADAR results.

I have been trying to get range from my RADAR kit. I have two graphs one I & Q, from which I calcualted the phase difference hence radial velocity. But I am really struggling with the range from the above graphs? The second graph is the FFT. Anything will help

[Honglei Chen]

What kind of radar it is? Continuous wave or pulse? It looks fairly constant to me so I'm wondering if there are other information you can share.

[Muhammad Fayyaz]

It send waves continuously so I believe it will be Continuous Wave. The top graph is like "Sine waves" representing I&Q channel (the screenshot shows the constant value). The bottom graph is FFT along with threshold(Red). Does the information suffices? or I am missing something again. Thanks