Sentinel-1 SLC to GRD processing

Microwave Toolbox Interferometry
#1

Hi,
I am trying to generate an interferogram with two Sentinel-1 SLC product. I found out that Sentinel-1 SLC product is slant range while Sentinel-1 GRD product is ground range detected. I am using the following graph as shown in the image!

MicrosoftTeams-image
MicrosoftTeams-image2898×687 210 KB

I then want to collocate the generated interferogram with a Sentinel-2 product. Do I need to convert this to ground range detected from SLC using the following graph?

Sentinel1SLCtoGRD
Sentinel1SLCtoGRD1727×1867 326 KB

Or the terrain correction step in the first graph is sufficient.

Thank you very much for the help.

Kind regards,
Priti

#2

the first graph produces a geocoded SLC product which is ready for collocation with Sentinel-2

#3

Thank you very much for your help. It would be really helpful if you can clarify one more doubt. I was just wondering if the first graph would produce pixels which are not square as I read that Single Look Complex product does not have square pixel resolution. I am guessing that if I collocate it with Sentinel-2 with the master product set as Sentinel-2, the resultant product should have square pixel resolution.

Kind regards,
Priti

#4

SLC pixels are rectangular at first, but after Terrain Correction they are resampled to the smallest possible squared pixel size.