Venµs

Sample images from VENµS new phase are available

Here are some long awaited news about the VENµS VM5 phase. The acquisitions started end of March 2022 with the following list of sites, and should go on for at least one year, and maybe more depending on the consumption of fuel (Hydrazine) to maintain the orbit. Most of the sites are acquired with a […]

02.11.2022

SEN2VENµS, un jeu de données pour l’entraînement d’algorithmes de super-résolution pour Sentinel-2

=> Nous sommes heureux d’annoncer la publication de SEN2VENµS, un dataset pour l’entraînement d’algorithmes de super-résolution pour Sentinel-2 ! Julien Michel, Juan Vinasco-Salinas, Jordi Inglada, & Olivier Hagolle. (2022). SEN2VENµS, a dataset for the training of Sentinel-2 super-resolution algorithms (1.0.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.6514159 Une description détaillée du jeu de donnée a été publié sous la […]

17.05.2022

SEN2VENμS, a dataset for the training of Sentinel-2 super-resolution algorithms

=>  We are happy to announce the publication of SEN2VENµS, a dataset for the training of Sentinel-2 super-resolution algorithms ! Julien Michel, Juan Vinasco-Salinas, Jordi Inglada, & Olivier Hagolle. (2022). SEN2VENµS, a dataset for the training of Sentinel-2 super-resolution algorithms (1.0.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.6514159 A detailed description of the dataset has been published as a […]

VENµS, the little satellite that goes up and down

The Israeli and French VENµS satellite is a small research satellite designed to test two innovative missions : an optical mission with a frequent revisit on the French side, and an experiment of a Ion Thruster to maintain the satellite at a low altitude on the Israeli side. Of course, we did not manage to […]

18.09.2021

Les réflectances de surface peuvent-elle être négatives ?

=> Voici une question que je reçois assez fréquemment : J’ai remarqué dans (tel produit L2A Sentinel-2 corrigé des effets atmosphériques par MAJA) des réflectances négatives ou égales à zéro. Est-ce normal ? Non, ce n’est pas normal, mais ce n’est pas totalement surprenant non plus. Contrairement aux réflectances négatives, qui ne devraient pas exister, […]

06.04.2021

MAJA 4.2 est disponible et devient un logiciel libre.

=> MAJA est un logiciel de détection de nuage et de correction atmosphérique de qualité, développé par le CNES et le CESBIO, avec des contributions du DLR.  Il est codé par CS GROUP. MAJA est utilisé pour traiter les données Sentinel-2 par le Pôle Theia, par les projets Sen2Agriet Sen4cap de l’agence spatiale Européenne, par […]

05.10.2020

MAJA 4.2 is available and open source

=> MAJA is the high quality cloud detection and atmospheric correction code developped by CNES and CESBIO, with contributions from DLR, and coded by CS GROUP. It is used within Pôle Theia, Sen2Agri, Sen4cap, DLR, EEA Snow&Ice, KERMAP… to process #Sentinel2 time series. It’s been a long time since we wanted to make MAJA available […]

01.10.2020

[MUSCATE News] Theia production is stalled (solved)

Update (18/08/2020): all the issues have been corrected, MUSCATE production and distribution have resumed. Update (17/08/2020):  production has resumed, but it will take us a couple of days to catch the backlog up.  The download site is still offline, but this should be solved quickly.   Following the failure of an equipement which hosts the […]

17.08.2020

[Directional effects] What field of view for the next generation of Sentinel-2 ?

The European Union is planning a new generation of the Sentinel-2 mission in 2030 or soon after. The main request from users is to improve the revisit frequency from 5 days to 2 to 3 days. There are two ways to improve the revisit: According to ESA and Airbus, the second solution is cheaper, and […]

08.07.2020

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