Thank you for your immediate response, ABraun.
Yup. My second question is not related to the first one. I am just taking it step-by-step as outlined by Dr. Matthias in his documentation (to avoid confusion). But did I install successfully SNAP? Because for interferogram preparation, I will be using SNAP since I do not have any other SAR software packages.
I am proceeding now with the StaMPS/MTI installation and following this discussion StaMPS 4.1 beta Installation in Ubuntu 18.04 where you are also of assistance to the one who posted the inquiry.
I hope to get good points from this froum to successfully install StaMPS/MTI. Using Linux is quiet challenging for me.
By the way, thank you again!