GSC Sentinel-2 PDGS STBD - emits - ESA

GSC Sentinel-2 PDGS STBDIssue 1 Revision 2 (draft) - 25.07.2010GMES-GSEG-EOPG-TN-09-0031page 30 of 60No parallelisation is possible for this processing step.3.3.2.2.13 Level-1C Resampling Grid Computation: Outer Parallelisation by Tile, by Bandand by DetectorLevel-1C Geometry Grid Computation is performed within the GPP algorithm by Phases 1 to7 of Resample_S2.This processing step can be parallelised at two levels: by tiles (cf. Figure 12) and, withineach tile, also by bands and by detectors.In this case all the spectral bands are processed and the parallelisation limit is 48+72+36:- 4 bands x 12 detectors at 10 m of resolution,- 6 bands x 12 detectors at 20 m of resolution,- 3 bands x 12 detectors at 60 m of resolution.Note: the processing time is function of the spatial resolution.3.3.2.2.14 Resampling on Level-1C Geometry: Parallelisation by Band and Bloc of TargetImageResampling on L1C Geometry is performed within the GPP algorithm by Phase 8 of theResample_S2.This processing step can be parallelised at two levels: by tiles (as showed in Figure 12) and,within each tile, also by bloc of target image if needed.Resample S2Resample S2Resample S2Resample S2Resample S2Resample S2Figure 12: Example of parallelisation by tiles3.3.2.2.15 Masks Computation: Outer Parallelisation by TileCloud Mask Computation is performed within the GPP algorithm by Mask_S2.ESA UNCLASSIFIED – For Official Use© ESAThe copyright of this document is the property of ESA. It is supplied in confidence and shall not be reproduced, copied orcommunicated to any third party without written permission from ESA.