[gdal-dev] Calibration updates for Sentinel 1 Driver for GDAL

[Augustus]

Hi, 

This query is based on extending the feature support mentioned in this
thread https://lists.osgeo.org/pipermail/gdal-dev/2016-May/044419.html

GDAL Sentinel driver doesn’t support calibration as of now. Right now we
have an implementation for sigma calibration with GRD datasets. 
We are using this reference:
https://sentinel.esa.int/documents/247904/685163/S1-Radiometric-Calibration-V1.0.pdf  

We would like to support full calibration capability and here are our idea
on how the architecture would be. Please forward your suggestions on the
same. 
Option 1: 
 Subdataset: Subswath along with polarization and Calibration combinations. 
 Single Band 
 Pros: Flexibility for user to select any combination 
 Cons: Too many subdatasets 

Option 2: (Preferred) 
 Subdataset: Combination of swath and polarisation 
 Bands: Sigma, Beta, Gamma & Uncalibrated Bands 
 Pros: Lesser Subdatasets. Fixed Band Combinations 

Option 3: 
 Subdataset: Each swath 
 Bands: Combination of Calibration and Polarization. 
 Cons: Too many subdatasets, lesser flexibility     

-Augustus 



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