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15 October 2015MACCS : Multi-Mission Atmospheric Correction and Cloud Screening tool for high-frequency revisit data processing
B. Petrucci,1 M. Huc,2 T. Feuvrier,3 C. Ruffel,3 O. Hagolle,4 V. Lonjou,1 C. Desjardins1
1Ctr. National d'Études Spatiales (France) 2CESBIO, CNRS (France) 3CS Systèmes d'information (France) 4Ctr. National d'Études Spatiales de la Biosphère (France)
For the production of Level2A products during Sentinel-2 commissioning in the Technical Expertise Center Sentinel-2 in CNES, CESBIO proposed to adapt the Venus Level-2 , taking advantage of the similarities between the two missions: image acquisition at a high frequency (2 days for Venus, 5 days with the two Sentinel-2), high resolution (5m for Venus, 10, 20 and 60m for Sentinel-2), images acquisition under constant viewing conditions. The Multi-Mission Atmospheric Correction and Cloud Screening (MACCS) tool was born: based on CNES Orfeo Toolbox Library, Venμs processor which was already able to process Formosat2 and VENμS data, was adapted to process Sentinel-2 and Landsat5-7 data; since then, a great effort has been made reviewing MACCS software architecture in order to ease the add-on of new missions that have also the peculiarity of acquiring images at high resolution, high revisit and under constant viewing angles, such as Spot4/Take5 and Landsat8. The recursive and multi-temporal algorithm is implemented in a core that is the same for all the sensors and that combines several processing steps: estimation of cloud cover, cloud shadow, water, snow and shadows masks, of water vapor content, aerosol optical thickness, atmospheric correction. This core is accessed via a number of plug-ins where the specificity of the sensor and of the user project are taken into account: products format, algorithmic processing chaining and parameters. After a presentation of MACCS architecture and functionalities, the paper will give an overview of the production facilities integrating MACCS and the associated specificities: the interest for this tool has grown worldwide and MACCS will be used for extensive production within the THEIA land data center and Agri-S2 project. Finally the paper will zoom on the use of MACCS during Sentinel-2 In Orbit Test phase showing the first Level-2A products.
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B. Petrucci, M. Huc, T. Feuvrier, C. Ruffel, O. Hagolle, V. Lonjou, C. Desjardins, "MACCS : Multi-Mission Atmospheric Correction and Cloud Screening tool for high-frequency revisit data processing," Proc. SPIE 9643, Image and Signal Processing for Remote Sensing XXI, 964307 (15 October 2015); https://doi.org/10.1117/12.2194797