SENTINEL-SAFE is based on the XML Formatted Data Units (XFDU) developed by the Consultative Committee for Space Data Systems (CCSDS). SENTINEL-SAFE is a profile of XFDU, and it restricts the XFDU specifications for specific utilisation in the EO domain, providing semantics in the same domain to improve interoperability between ground segment facilities.
Each product package includes:

  • a manifest file containing a metadata section and a data object section
  • measurement data files
  • annotation data files, if defined
  • for Level-0 only, representation data files (XML files describing the binary information).

Figure 2: XFDU package schema (from  D073.3_S3IPF PDS 006 - i1r7 - Product Data Format Specification – SYNERGY)

SYN L2, VGP and VGT-S have additional attributes to their files. These attributes aim to ensure the self-containment of the dataset. There are defined in the following table and their value should be adapted according to the file.

Table 6: Additional Global Attributes for SYN L2, VGP and VGT-S Package files
Element name Description
absolute_orbit_number Absolute orbit number during which data contained within the product have been acquired
Note that this attribute is not included in VGT-S products
start_time Product start date and time (yyyy-mm-ddThh:mm:ss.ssssssZ)
stop_time Product stop date and time (yyyy-mm-ddThh:mm:ss.ssssssZ)
comment Miscellaneous extra information (empty)
resolution Dataset resolution (across- and along-track) in meters unit function of the associated grid and view


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