{"id":123240,"date":"2018-04-27T09:00:32","date_gmt":"2018-04-27T09:00:32","guid":{"rendered":"https:\/\/\/la-galaxie-des-satellites-sentinel-de-lesa-est-complete\/"},"modified":"2018-04-27T09:00:32","modified_gmt":"2018-04-27T09:00:32","slug":"la-galaxie-des-satellites-sentinel-de-lesa-est-complete","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/la-galaxie-des-satellites-sentinel-de-lesa-est-complete\/","title":{"rendered":"La galaxie des satellites \u00ab\u00a0Sentinel\u00a0\u00bb de l&rsquo;ESA est compl\u00e8te"},"content":{"rendered":"<p>Pierre angulaire du programme europ\u00e9en Copernicus, Sentinel-3B vient compl\u00e9ter la galaxie des stellites Sentinel, dont les premiers lancements ont commenc\u00e9 en 2014,&nbsp;Sentinel-3-B se distingue par l\u2019emport d\u2019une s\u00e9rie d\u2019instruments \u00e0 la pointe de la technologie.<\/p>\n<ul>\n<li>Deux instruments optiques : un imageur d\u00e9di\u00e9 \u00e0 la couleur des oc\u00e9ans et des terres OLCI (Ocean and Land Color Instrument) et un radiom\u00e8tre d\u00e9di\u00e9 \u00e0 la mesure de la temp\u00e9rature des sols et des oc\u00e9ans SLSTR*<\/li>\n<li>Deux instruments Radio-Fr\u00e9quence : un radar altim\u00e8tre \u00e0 synth\u00e8se d\u2019ouverture SRAL (Synthetic aperture Radar ALtimeter), compl\u00e9t\u00e9 par un radiom\u00e8tre micro-onde MWR (MicroWave Radiometer), qui fourniront des mesures de la topographie des oc\u00e9ans, des glaces de mer et des eaux continentales.&nbsp;<\/li>\n<\/ul>\n<p>Plac\u00e9 sur une orbite \u00e0 815 km, Sentinel-3B balaye&nbsp;toute la surface du globe \u00e0 l\u2019aide de capteurs optiques ou radars, en passant r\u00e9guli\u00e8rement au m\u00eame endroit. Ce balayage r\u00e9gulier de la surface offre une kyrielle d\u2019applications&nbsp;: suivi des courants marins et donc des d\u00e9placements de pollution, mouvement des planctons et de la biomasse marine qui les consomment, variation du niveau des oc\u00e9ans, suivi de la surface de la banquise, de la for\u00eat, des zones de cultures, etc.<\/p>\n<p>Les donn\u00e9es r\u00e9colt\u00e9es contribueront \u00e0 l\u2019am\u00e9lioration des pr\u00e9visions oc\u00e9anographiques et atmosph\u00e9riques. Elles permettront aussi d\u2019avoir une meilleure connaissance de l\u2019\u00e9tat de sant\u00e9 de l\u2019oc\u00e9an, de mieux g\u00e9rer les ressources halieutiques, agricoles, foresti\u00e8res, la biodiversit\u00e9, les ressources en eau, la sant\u00e9 publique, la production, la s\u00e9curit\u00e9 alimentaire, et de surveiller avec pr\u00e9cision les changements de niveau de la mer ainsi que la diminution des banquises polaires.<\/p>\n<hr \/>\n<p>&nbsp;Le contrat avait \u00e9t\u00e9 attribu\u00e9 \u00e0 Thales Alenia Space en d\u00e9cembre 2009 par l\u2019Agence Spatiale Europ\u00e9enne (ESA). Telespazio a dirig\u00e9 les op\u00e9rations du segment terrestre pour l\u2019enti\u00e8re mission Sentinel-3. A travers ces services, les utilisateurs sont aptes \u00e0 acc\u00e9der \u00e0 des donn\u00e9es environnementales importantes, seulement trois heures apr\u00e8s que l\u2019information ai \u00e9t\u00e9 re\u00e7ue par les satellites.<\/p>\n<p>&nbsp;<em>* Le SLSTR (Sea and Land Surface Temperature Radiometer), construit par un consortium international sous la direction de Leonardo, Italie, d\u00e9livre des mesures thermiques tr\u00e8s pr\u00e9cises de la surface de la Terre \u00e0 1000 m\u00e8tres de r\u00e9solution et inclut deux chaines d\u2019observation des incendies.<\/em><\/p>\n<p><em><a href=\"https:\/\/www.thalesgroup.com\/fr\">Thales<\/a><\/em><\/p>\n<p><em>Autres articles<\/em><\/p>\n<p><a href=\"http:\/\/www.electronique-eci.com\/news\/laser-supercam-de-thales-objectif-mars-2020\">Laser Supercam de Thales, objectif Mars 2020<\/a><\/p>\n<p><a href=\"http:\/\/www.electronique-eci.com\/news\/thales-ameliore-la-navigation-aerienne-avec-le-gps-galileo\">Thales am\u00e9liore la Navigation a\u00e9rienne avec le GPS Galileo<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le satellite Sentinel-3B r\u00e9alis\u00e9 par Thales Alenia Space pour le compte de l\u2019Agence Spatiale Europ\u00e9enne (ESA), a \u00e9t\u00e9 lanc\u00e9 avec succ\u00e8s depuis la base de Plesetsk, \u00e0 bord d\u2019un lanceur Rockot.<\/p>\n","protected":false},"author":11,"featured_media":123241,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[883],"tags":[],"domains":[47],"ppma_author":[1143],"class_list":["post-123240","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technologies","domains-electronique-eci"],"acf":[],"yoast_head":"<title>La galaxie des satellites &quot;Sentinel&quot; de l&#039;ESA est compl\u00e8te ...<\/title>\n<meta name=\"description\" content=\"Le satellite Sentinel-3B r\u00e9alis\u00e9 par Thales Alenia 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