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Preparation of the Calibration Baseline for Sentinel-2 Collection 1

Alhammoud, Bahjat and Lafrance, Bruno and Quang, Carine and Clerc, Sébastien and Louis, Jerome and Pflug, Bringfried and Boccia, Valentina (2021) Preparation of the Calibration Baseline for Sentinel-2 Collection 1. Conference on Characterization and Radiometric Calibration for Remote Sensing (CALCON), 30. Aug. - 2. Sept. 2021, virtuel.

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The Sentinel-2 mission observes the Earth in 13 spectral bands in the visible and SWIR with a repeat cycle of 5 days for each satellite unit A and B. A complete reprocessing of the Sentinel-2 archive to generate the "Collection-1" is currently under preparation. In this presentation we describe the activities performed by the Sentinel-2 Mission Performance Center to prepare the calibration baseline for Collection-1. The preparation activities involve a correction of some minor errors in the definition of the spectral response function at the beginning of the mission. A more significant change concerns the possible harmonization between the two sensors. Indeed, radiometric validation results reported by different teams confirm the presence of a small bias (around 1%) in the visible range between the satellites. Sentinel-2B is generally believed to be slightly too dark, while Sentinel-2A agrees better with other references. The presentation will describe the inter-satellite bias assessment as well as a study of the impact of a potential harmonization on Level-2 products.

Item URL in elib:https://elib.dlr.de/145346/
Document Type:Conference or Workshop Item (Speech)
Title:Preparation of the Calibration Baseline for Sentinel-2 Collection 1
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Alhammoud, Bahjatbalhammoud (at) argans.co.ukUNSPECIFIED
Lafrance, Brunobruno.lafrance (at) c-s.frUNSPECIFIED
Quang, Carinecarine.quang (at) csgroup.euUNSPECIFIED
Louis, Jeromejerome.louis (at) telespazio.comUNSPECIFIED
Pflug, BringfriedBringfried.Pflug (at) dlr.dehttps://orcid.org/0000-0002-4626-9393
Boccia, ValentinaValentina.Boccia (at) esa.intUNSPECIFIED
Date:August 2021
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Sentinel-2, collection-1, radiometric harmonization
Event Title:Conference on Characterization and Radiometric Calibration for Remote Sensing (CALCON)
Event Location:virtuel
Event Type:international Conference
Event Dates:30. Aug. - 2. Sept. 2021
Organizer:Utah State University, Space Dynamics Laboratory
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Optical remote sensing
Location: Berlin-Adlershof , Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Photogrammetry and Image Analysis
Deposited By: Pflug, Bringfried
Deposited On:11 Nov 2021 15:02
Last Modified:17 Nov 2021 18:05

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