Hereafter some news on the status of the Venµs mission.Venµs was successfully launched from the Kourou space port on August 1st by a VEGA launcher: https://vega.cnes.fr/en/live-vega-launch-venus-august-first-2017 First images were acquired by mid-August (see below for examples). The commissioning phase is still running. This phase consists in checking the whole system, including the satellite, the camera, the download […]
=> A sixth year begins for the « Séries temporelles » blog, and as usual, it is an opportunity to review its audience, and to get a little self-satisfaction.The blog is always receiving more visits. even if the annual growth rate is much lower than the previous years, but still 20%… French visitors constitute only 35% of […]
=>Une sixième année commence pour le blog Séries Temporelles, et comme d’habitude, c’est l’occasion de revenir sur sa fréquentation, et de faire un peu d’autosatisfaction. Le blog reçoit toujours plus de visites. même si la croissance devient inférieure à 20%..en un an. Les visiteurs Français ne constituent plus que 35% des visites. Les Etats-Unis viennent en […]
For Christmas Sentinel-2 offered us this nice picture of the Bezymianny volcano ash trail. Bezymianny is located in the central part of the Klyuchevskaya cluster of volcanoes in the Kamachatka peninsula. The image was acquired on Christmas eve but the ash plume was observed on 20 December.
Lo Canigó és una magnòlia immensaque en un rebrot del Pirineu se bada- Jacint Verdaguer i Santaló The Canigó is an immense magnoliathat blooms in an offshoot of the Pyrenees
Since spring 2017, we have made the MAJA cloud screening and atmospheric correction processor available for commercial use. A bit later, end of June, the Sen2agri software package, which includes MAJA older version (named MACCS) , was also released to the public. We did not expect a large success, as these two packages are quite […]
I have always wanted to provide an Algorithm Theoretical Basis Document related to MAJA, but never had time, because I always had more urgent things to do. Some papers had been published, allowing MAJA users to get a good idea or the methods we use, but the published articles did not cover all the features […]
Le satellite Franco-Israelien Venµs, attendu depuis si longtemps, a été lancé le 2 août 2017. 110 sites dans le monde vont être observés en 2018 et 2019 à 10 m de résolution et avec 12 bandes spectrales. Alors que la plupart des sites ne correspondent qu’à l’emprise d’une scène Venµs (27 à 32 km de […]
=> The main difficulty of the atmospheric correction comes from the determination of the aerosols optical properties: one has to know the optical properties of the aerosol type present in the atmosphere and determine their optical thickness. Using Sentinel-2 data to determine the aerosol type is very complicated, and our MAJA processor, used to generate […]