I know this probably seems like a very simple question and I am embarressed to have to ask it, but I have having problems opening ALOS PALSAR data in SNAP.
I downloaded some ALOS PALSAR L1 data (in FBS SLC format) from the ESA On the fly service). My goal is to conduct offset tracking between two scenes. I have tried following the steps on the "Orthorectifcation of ALOS PALSAR tutorial http://sentinel1.s3.amazonaws.com/docs/ALOS%20PALSAR%20Orthorectification%20Tutorial.pdf) but I seem to get an error at the first step.
When I try to open the file by selecting the VOL file within the CEOS directory I get this error message
Does anyone have any hint of what I may be doing wrong?