GSC Sentinel-2 PDGS OCD - Emits - ESA

GSC Sentinel-2 PDGS OCD
issue 1 revision 2 (draft) - 25.07.2010
GMES-GSEG-EOPG-TN-09-0008
page ix of xxii
4.3.2.2.1 Spacecraft Phase-in .......................................................................................74
4.3.2.2.2 EDRS Phase-in ..............................................................................................74
4.3.2.3 PDGS Physical Layout and Evolutions..............................................................75
4.3.2.4 Evolutions through Third-Party Collaborations ..................................................75
4.3.2.5 Local Station Network........................................................................................75
4.3.3 GMES-Driven Operation Constraints........................................................................76
4.3.4 GSCDA Operation Constraints .................................................................................76
4.3.5 Lessons Learnt .........................................................................................................77
4.3.5.1 General Returns of Experience .........................................................................77
4.3.5.2 Long-Term Data Preservation ...........................................................................77
4.3.5.3 Landsat On-Line Data-Access Experience at USGS.........................................77
4.3.5.4 G-POD Experience at ESA................................................................................78
4.3.6 Technology Evolution Drivers ...................................................................................79
4.3.7 FOS Operation Constraints ......................................................................................81
4.3.7.1 Mission Schedule Uplink and Mission Planning Loop........................................81
4.3.7.2 MSI Parameter Tables Uplink............................................................................82
4.3.7.3 HKTM Delivery Constraints ...............................................................................82
4.3.8 Spacecraft Operation Constraints.............................................................................82
4.3.8.1 MSI Detectors Parallax......................................................................................83
4.3.8.2 MSI Data Downlink Discontinuities ....................................................................83
4.3.8.3 MSI Duty Cycle..................................................................................................85
4.3.8.4 X-Band Operation Constraints...........................................................................85
4.3.8.5 Asynchronous Management of Ancillary and MSI Data.....................................85
4.3.8.6 OCP Operation Constraints...............................................................................86
4.3.8.7 Constraints not implemented by the PDGS .......................................................86
4.3.9 MSI Data Processing Constraints.............................................................................86
4.3.9.1 Radiometry Processing Constraints ..................................................................86
4.3.9.2 Geometry Processing Constraints .....................................................................87
4.3.9.2.1 Image Datation ...............................................................................................87
4.3.9.2.2 Band Co-Registration Constraints ..................................................................88
4.3.9.2.3 Spatial Registration ........................................................................................88
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