I want to make a dInSAR interferogram out of two sentinel SLC images each about 4 GB of size, but the problem is that my machine is a bit slow. 4 cores processor and 4 GB RAM and no special GPU. When I go to Radar>Coregistration >S1 TOPS Coregister and select the images and selecting my required subswath IW2 and first just three bursts. For VV polarization only.
At first it showed error that no orbit file is present so I manually downloaded the orbit files for each image for S1A and B total 4 orbit files.
When I run the process nothing starts and progress bar is at 0. Even the system is running fine as it should no professor cooling fan starts buzzing and it’s like I never even clicked on start.
Please tell any alternative way of selecting the IW2 for both images and later coregistering them. I even tried to seperate the subswath by selecting one image and going to S1TOPS in dropdown but when I open coregisteration wizard it says images must have subswaths type error.
RAM and a high reading/writing speed of your hard drive is more important than many cores. If you have the chance to process data on a SSD, things will recognizably speed up.
The spilt and orbit file process was instantaneous. Now the back-geocoding is taking hours and I am still stuck on this screen. Computer is under no load at all in task manager.
Thank you it worked. The update worked. At first I kept old user data but then uninstalled again. Cleared the caches and registries. Installed the new SNAP 8.0 Updated all the plugins. I forgot to thank you. That bird is really beautiful. You can close this thread.