Minimize SLSTR Retrieval

Similar to OLCI "retrieval" processing, SLSTR data are retrieved and prepared for use in Level-1 main processing. The nadir parts of the SLSTR swaths are loaded and transformed to the original acquisition geometry. Annotations are, if necessary, interpolated on the original grid.

The ortho-geolocation function for the reference channel (Su) is retrieved and de-registration to the other channels of the instrument is estimated in accordance with an instrument characterisation file. The radiometric units of SLSTR measurements are converted to TOA reflectances.

Logical flow of module SLSTR retrieval