{"id":15955,"date":"2021-03-29T09:00:58","date_gmt":"2021-03-29T09:00:58","guid":{"rendered":"https:\/\/\/thales-alenia-space-selectionne-pour-lightspeed-la-constellation-de-298-satellites-de-telesat\/"},"modified":"2021-03-29T09:00:58","modified_gmt":"2021-03-29T09:00:58","slug":"thales-alenia-space-selectionne-pour-lightspeed-la-constellation-de-298-satellites-de-telesat","status":"publish","type":"post","link":"https:\/\/test.ecinews.fr\/fr\/thales-alenia-space-selectionne-pour-lightspeed-la-constellation-de-298-satellites-de-telesat\/","title":{"rendered":"Thales Alenia Space, s\u00e9lectionn\u00e9 pour Lightspeed, la constellation de 298 satellites de Telesat"},"content":{"rendered":"<p>La signature de ce contrat historique pour<em> <\/em>Thales Alenia Space fait suite \u00e0 d\u2019intenses travaux men\u00e9s en amont sur la conception de Lightspeed. Telesat s\u2019appuiera sur Thales Alenia Space pour couvrir \u00e0 la fois le segment satellites et le segment mission, tout en \u00e9tant responsable des performances du r\u00e9seau de bout en bout.<\/p>\n<p>Dans un premier temps, le segment spatial de Lightspeed comprendra 298 satellites de la classe 700-750 kg. Le r\u00e9seau offrira une connectivit\u00e9 de plusieurs t\u00e9rabits par seconde dans le monde entier pour des services professionnels s\u00e9curis\u00e9s \u00e0 faible latence et haut d\u00e9bit.<\/p>\n<hr \/>\n<p>Cette constellation en orbite basse repose sur une architecture qui combine des \u00e9quipements avanc\u00e9s \u00e0 bord des satellites &#8211; antennes actives capables de repositionner dynamiquement les faisceaux jusqu\u2019\u00e0 un millier de fois par seconde, puissants processeurs capables de traiter de multiples largeurs de bande, liaisons laser inter satellites pour assurer une couverture de service sur l\u2019ensemble du globe &#8211; et une combinaison de logiciels \u00e0 la fois sol et bord assurant une exploitation maximale des ressources du syst\u00e8me. La flexibilit\u00e9 de cette architecture est un facteur essentiel de sa comp\u00e9titivit\u00e9, en permettant l\u2019optimisation de la capacit\u00e9 allouable vis-\u00e0-vis de la demande, cette derni\u00e8re pouvant varier sensiblement dans le temps et l\u2019espace, notamment entre les zones de forte densit\u00e9 comme les a\u00e9roports et les zones moins denses comme les campagnes. Les interconnexions par liaison optique laser entre les satellites de la constellation fourniront un maillage recouvrant l\u2019int\u00e9gralit\u00e9 de la surface du globe, y compris au-dessus des oc\u00e9ans et des p\u00f4les, tout en offrant un haut niveau de s\u00e9curit\u00e9 de service de bout en bout. Ces liaisons optimisent \u00e9galement le segment sol en r\u00e9duisant le nombre de stations sol et en offrant plus de libert\u00e9 quant \u00e0 leur implantation, ainsi que la possibilit\u00e9 de les d\u00e9ployer au gr\u00e9 de la mont\u00e9e en puissance du r\u00e9seau.&nbsp;Les premiers satellites devraient \u00eatre lanc\u00e9s dans deux ans.<\/p>\n<p><a href=\"https:\/\/www.thalesgroup.com\/fr\">Thales<\/a><\/p>\n<p>A lire :&nbsp;<a href=\"https:\/\/www.electronique-eci.com\/news\/charges-utiles-thales-alenia-pour-les-satellites-de-communication-russes-express-80-et-103\">Charges utiles Thales Alenia pour les satellites de communication Russes Express 80 et 103.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La constellation de 298 satellites de t\u00e9l\u00e9communications en orbite basse \u00a0Lightspeed offrira des services professionnels \u00e0 haut d\u00e9bit et de haute performance sur toute la surface du globe pour la connectivit\u00e9 mobile (maritime, a\u00e9rienne), les liaisons 4G et 5G, les r\u00e9seaux gouvernementaux et les communications professionnelles.<\/p>\n","protected":false},"author":11,"featured_media":15956,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[],"domains":[47],"ppma_author":[1143],"class_list":["post-15955","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Thales Alenia Space, s\u00e9lectionn\u00e9 pour Lightspeed, la constell...<\/title>\n<meta name=\"description\" content=\"La constellation de 298 satellites de t\u00e9l\u00e9communications en orbite basse \u00a0Lightspeed offrira des services professionnels \u00e0 haut d\u00e9bit et de haute...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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