{"id":2869,"date":"2025-01-21T18:26:48","date_gmt":"2025-01-21T18:26:48","guid":{"rendered":"https:\/\/ngcaerospace.com\/?p=2869"},"modified":"2025-01-21T19:58:58","modified_gmt":"2025-01-21T19:58:58","slug":"lancement-reussi-du-satellite-proba-3-une-autre-mission-spatiale-pour-ngc-aerospatiale","status":"publish","type":"post","link":"https:\/\/ngcaerospace.com\/fr\/lancement-reussi-du-satellite-proba-3-une-autre-mission-spatiale-pour-ngc-aerospatiale\/","title":{"rendered":"Lancement r\u00e9ussi du satellite PROBA-3 : une autre mission spatiale pour NGC A\u00e9rospatiale"},"content":{"rendered":"<p><em>Cr\u00e9dits photo: Agence spaciale europ\u00e9enne\u00a0<\/em><\/p>\n<p>SHERBROOKE, Qu\u00e9bec, Canada, [5 d\u00e9cembre 2024] \u2014 Aujourd\u2019hui \u00e0 16h04, heure locale (5h34 du matin \u00e0 Sherbrooke), le satellite PROBA-3 de l\u2019Agence spatiale europ\u00e9enne (ESA) a \u00e9t\u00e9 mis en orbite \u00e0 partir du Satish Dhawan Space Centre \u00e0 Sriharikota en Inde pour une mission scientifique de deux ans d\u2019observation de la couronne solaire.<\/p>\n<p>Une fois en orbite, PROBA-3 se s\u00e9parera en deux satellites enti\u00e8rement autonomes : l\u2019Occulteur qui a pour mission de cacher le disque du Soleil pour permettre au deuxi\u00e8me satellite, le Coronographe, de prendre des mesures de la couronne solaire sans \u00eatre aveugl\u00e9 par le disque solaire qui est beaucoup plus brillant. Selon Jean de Lafontaine, pr\u00e9sident-directeur g\u00e9n\u00e9ral de NGC, \u00ab Le but de la mission est de cr\u00e9er \u00e0 toutes les 20 heures des \u00e9clipses artificielles d\u2019une dur\u00e9e chacune de 6 heures permettant aux scientifiques des observations prolong\u00e9es et r\u00e9p\u00e9t\u00e9es de la couronne solaire pour mieux p\u00e9n\u00e9trer ses myst\u00e8res. \u00bb<\/p>\n<p>La couronne solaire, site des \u00e9ruptions solaires qui peuvent atteindre des centaines de milliers de kilom\u00e8tres d&rsquo;altitude, fait l&rsquo;objet de nombreuses recherches scientifiques pour avancer notre connaissance du Soleil et pour mieux comprendre les \u00ab temp\u00eates solaires \u00bb qui peuvent affecter le fonctionnement des satellites et interf\u00e9rer avec les r\u00e9seaux de communication et les centrales de g\u00e9n\u00e9ration d&rsquo;\u00e9lectricit\u00e9 sur Terre.<\/p>\n<p>PROBA-3 est le sixi\u00e8me satellite de l\u2019ESA pour lequel NGC A\u00e9rospatiale contribue l\u2019intelligence logicielle embarqu\u00e9e qui conf\u00e8re aux satellites une agilit\u00e9, une pr\u00e9cision et une autonomie sans pr\u00e9c\u00e9dent pour positionner et orienter le satellite, r\u00e9duisant de fa\u00e7on significative les co\u00fbts d\u2019exploitation des satellites tout en maximisant la qualit\u00e9 des donn\u00e9es scientifiques. \u00ab Cela est d\u2019autant plus important pour la mission PROBA-3 puisque le logiciel d\u00e9velopp\u00e9 par NGC va commander de fa\u00e7on autonome l\u2019orientation des satellites \u00e0 une pr\u00e9cision au millidegr\u00e9 et la position des deux satellites au millim\u00e8tre pr\u00e8s, tout en conservant leur distance nominale de 150 m, pour r\u00e9aliser une \u00e9clipse parfaite \u00bb souligne Jean-Fran\u00e7ois Hamel, vice-pr\u00e9sident Syst\u00e8mes spatiaux et charg\u00e9 du projet PROBA-3.<\/p>\n<p>Cette collaboration de plus de deux d\u00e9cennies entre NGC A\u00e9rospatiale, l\u2019ESA et les fabricants de satellites europ\u00e9ens a \u00e9t\u00e9 rendue possible gr\u00e2ce \u00e0 l\u2019Accord de coop\u00e9ration Canada-ESA.<\/p>\n<p><strong>Pour plus d\u2019informations,\u00a0<a href=\"https:\/\/ngcaerospace.com\/fr\/contact\/\">contactez-nous<\/a>.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cr\u00e9dits photo: Agence spaciale europ\u00e9enne\u00a0 SHERBROOKE, Qu\u00e9bec, Canada, [5 d\u00e9cembre 2024] \u2014 Aujourd\u2019hui \u00e0 16h04, heure locale (5h34 du matin \u00e0 Sherbrooke), le satellite PROBA-3 de l\u2019Agence spatiale europ\u00e9enne (ESA) a \u00e9t\u00e9 mis en orbite \u00e0 partir du Satish Dhawan Space Centre \u00e0 Sriharikota en Inde pour une mission scientifique de deux ans d\u2019observation de [&hellip;]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[35],"tags":[],"class_list":["post-2869","post","type-post","status-publish","format-standard","hentry","category-communique-de-presse"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - 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