Software Access
MAJA is available under an APACHE 3 licence. Please consult the MAJA documentation to install and use.
Description
MAJA is an Atmospheric Correction processor designed to produce land surface reflectances (Level 2A) from orthorectified Top-of-Atmospher satellite imagery (Level 1C). MAJA detects the clouds and their shadows, and estimates aerosol optical thickness (AOT) and water vapour to correct a given image for the atmospheric effects (absorption, scattering).
MAJA has been developed jointly by CESBIO and CNES, with contributions from the DLR. CESBIO developed the methods and a prototype, while CNES funded the operational version of the processor, with a strong support from CESBIO for the validation.
MAJA is unique in its dedication to high resolution time series and its extensive use of multi-temporal methods. For this reason, MAJA can only be applied to those optical missions that observe the Earth under constant viewing angles. This is the case for the Sentinel-2, VENµS, LANDSAT and Trishna satellites.
The L2A outputs are used to produce monthly syntheses of cloud-free reflectance distributed as L3A, produced by our WASP tool : the Weighted Average Synthesis Processor.
Contact
Olivier Hagolle
CNES|CESBIO
ResearchGate
@O.Hagolle
Contributions