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 […]
En partant de Boutx (780 m) on peut monter au Pic Saillant (1756 m) (voir le topo) et admirer un magnifique panorama hydrologique sur le haut bassin de la Garonne et de son affluent la Pique. Par temps clair, on peut deviner les sommets du Luchonnais encore enneigés au mois de juillet qui marquent la […]
Le 13e bulletin Theia est sorti, un grand merci à Isabelle Biagiotti !
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 […]
This is the final post of a series of studies we did to find out how far we can extend the field of view of next generation of Sentinel-2 satellites. I hope I did not lose most readers in the length of the previous posts. For the readers who land on this page, which […]
Introduction To perform a correction of directional effect, directional models are required. A large number of directional models have been developed, such as the ones of Roujean [1] or Ross-Li [2], that try to reproduce the directional variations as a function of viewing angles and solar angles, with a rather good accuracy for most types […]
Introduction In the framework of our research for ESA concerning the maximum field of view of next generation of Sentinel-2 satellite, we searched for a way to estimate directional effects, without using a particular directional model to correct for these effects. The current directional models are imperfect, and we can assume that progress will be […]
Question: The color image displayed on the left is a new kind of RGB composite image, can you guess how it was made ? Hints: the blue bright pixels correspond to water, but water is not bright usually… except if it is obtained in specular condition, when the water surface mirrors the sun towards the […]
Le CNES a publié sur LinkedIn ces jolies photos du Centre Spatial de Toulouse après le confinement. Grâce aux satellites d’observation de la Terre, les ingénieurs du CNES sont capables d’étudier la végétation aux quatre coins du globe. Mais, les cordonniers sont souvent les plus mal chaussés… Pourraient-ils étudier leur propre pelouse par satellite ? […]