Sentinel-2 MSI Technical Guide

Sentinel-2 MSI Technical Guide

The Sentinel-2 Technical Guide provides an in-depth description of the mission's products and algorithms as well as details on the MultiSpectral Instrument (MSI) and its performance.

Before reading the Technical Guide, users are advised to read the Sentinel-2 User Guide for a high level description of available instrument modes and products.

The categories are:

  • MSI Instrument
    Gives a description of the spectral bands, instrument design and detector configuration
  • Products and Algorithms
    Provides an overview of the Processing Levels (L0, L-1A, L1B, L-1C) generated by the Sentinel-2 Ground Segment, their access, and links to the generation of Level-2A date using the Sentinel-2 Toolbox
  • Calibration and Validation
    Calibration and Validation (Cal/val) are vital processes in the quality control of generated products, and ensure that the processed data is meaningful to scientific users
    • Calibration
      Calibration is used to assess the response of the instrument, and to ensure that the changes that occur naturally over time in systems and hardware are managed to ensure stability of output
    • Validation
      Having undergone calibration, the processed data requires validation. Validation is confirmation of the correct adoption of the calibrations performed, and that the subsequent processing is fit for dissemination to the user community.
    • Performance
      Identifies the radiometric and geometric image quality requirements of Sentinel-2 products.
  • Data Product Quality Reports
    The Coordinating Centre of the Mission Performance Centre (MPC-CC) provides a monthly status of the Sentinel-2 product quality via the dissemination of a Data Quality Report (DQR). The report provides information on the monitoring and measurement of product performances against the proposed specification. It also documents observed anomalies and known issues, the list of defective pixels, and any processing chain improvements that lead to an increment of the Processing Baseline.

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Key Resources

Sentinel-2 MSI User Guide Key Resources