The OLCI data format follows the format defined for each Sentinel-3 product in the PDGS product specification and is based on SENTINEL-SAFE.
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.
Figure 2: XFDU package schema
Each product package includes:
Sentinel-3 user products are disseminated in Product Dissemination Units (PDU), in order to ease the online dissemination and data handling for the users. The PDU is a portion of data and is defined per product type.
Table 5: Description and content of the OLCI product package. The estimated size corresponds to a half orbit without consideration about compression, with NRT/NTC less than 3/48 hours after measurement by satellite