Pre-processing SAR

Meelad_16777 · September 28, 2018, 2:18pm

Dear Members
Im a new user with SNAP and SAR satellites. What are the pre-processing steps should we do with Sentinel-1 SAR Data.? Im undertaking project Ph.D. for detecting Archaeological subsurface features.

ABraun · September 28, 2018, 2:44pm

Please have a look here: Radiometric & Geometric Correction Workflow

Meelad_16777 · September 28, 2018, 6:02pm

Thank you, Mr. ABraun
What about the co-registration of the SAR data, the Data when it is downloaded and opened in SNAP toolbar it is found rotating inversely about 180 degrees. I mean the SAR Satellite should be georefrenced.

lveci · September 28, 2018, 6:05pm

SAR data is displayed as it’s acquired until it becomes terrain corrected and map projected. In the acquired geometry, the orientation will depend on the pass (ascending/descending).

ABraun · September 28, 2018, 7:15pm

I recommend the tutorials, especially “SAR basics”

http://step.esa.int/main/doc/tutorials/

Meelad_16777 · September 28, 2018, 9:15pm

Dear Mr. Lveci
Mr. ABraun
My SAR data fixed and got flipped correctly by Geometric Terrain Correction Range Doppler Terrain Correction from SNAP toolbar.
So I ll follow other pre-processing steps that you`re advised me
I really appreciated your great help.