{"id":2012,"date":"2022-03-29T15:42:19","date_gmt":"2022-03-29T13:42:19","guid":{"rendered":"https:\/\/www.pilatre-de-rozier.com\/pbp\/?p=2012"},"modified":"2022-03-29T15:42:20","modified_gmt":"2022-03-29T13:42:20","slug":"leurope-devra-attendre-pour-achever-la-galaxie-galileo","status":"publish","type":"post","link":"https:\/\/www.pilatre-de-rozier.com\/pbp\/2022\/03\/29\/leurope-devra-attendre-pour-achever-la-galaxie-galileo\/","title":{"rendered":"L\u2019Europe devra attendre pour achever la galaxie Galil\u00e9o"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">\ud83c\uddeb\ud83c\uddf7 <strong>L\u2019Europe devra attendre pour achever la galaxie Galil\u00e9o<\/strong><\/h3>\n\n\n\n<p>Les Am\u00e9ricains ont leur GPS, les Chinois Beidou, les Russes Glonass et les Europ\u00e9ens Galileo, un syst\u00e8me de positionnement par satellites. Fort heureusement, il est pr\u00e9vu que les diff\u00e9rents syst\u00e8mes soient globalement compatibles entre eux, en cas de panne. En effet, l\u2019aviation, les b\u00e2teaux, les smartphones et autres, bref tous les appareils connect\u00e9s ont besoin d\u2019un syst\u00e8me de radionavigation, pour fonctionner. GPS est de loin le plus ancien, mais Galil\u00e9o est plus pr\u00e9cis avec une technologie plus r\u00e9cente. Le probl\u00e8me est que ces satellites \u00e9taient lanc\u00e9s pour le compte de l\u2019agence spatiale europ\u00e9enne par le lanceur Soyouz. Si la collaboration continue avec les Russes sur l\u2019ISS, les autres collaborations ont \u00e9t\u00e9 compl\u00e8tement stopp\u00e9es. Et il reste encore dix satellites \u00e0 envoyer dans l\u2019espace pour achever la galaxie, alors que 24 ont d\u00e9j\u00e0 \u00e9t\u00e9 mis en place. Il faudra sans doute attendre le lancement d\u2019Ariane 6 ou la possibilit\u00e9 d\u2019op\u00e9rer avec SpaceX ou avec les Indiens GSLV. Pour l\u2019heure l\u2019urgence n\u2019est pas \u00e0 la d\u00e9cision car Galileo fonctionne d\u00e9j\u00e0 parfaitement.<\/p>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83c\uddec\ud83c\udde7 <strong>Europe will have to wait to complete the Galileo galaxy<\/strong><\/h3>\n\n\n\n<p>The Americans have their GPS, the Chinese Beidou, the Russians Glonass and the Europeans Galileo, a satellite positioning system. Fortunately, the different systems are supposed to be globally compatible with each other in case of failure. Indeed, aviation, ships, smartphones and others, in short all connected devices need a radio navigation system to work with. GPS is by far the oldest, but Galileo is more accurate with a more recent technology. The problem is that these satellites were launched on behalf of the European Space Agency by the Soyuz launcher. If the collaboration continues with the Russians on the ISS, the other collaborations have been completely stopped. And there are still ten satellites to send into space to complete the galaxy, while 24 have already been put in place. We will probably have to wait for the launch of Ariane 6 or the possibility of operating with SpaceX or with the Indian GSLV. For the time being, the decision is not urgent because Galileo is already working perfectly.&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ud83c\uddeb\ud83c\uddf7 L\u2019Europe devra attendre pour achever la galaxie Galil\u00e9o Les Am\u00e9ricains ont leur GPS, les Chinois Beidou, les Russes Glonass et les Europ\u00e9ens Galileo, un syst\u00e8me de positionnement par satellites. Fort heureusement, il est pr\u00e9vu que les diff\u00e9rents syst\u00e8mes soient globalement compatibles entre eux, en cas de panne. En effet, l\u2019aviation, les b\u00e2teaux, les smartphones [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-2012","post","type-post","status-publish","format-standard","hentry","category-non-classifiee"],"_links":{"self":[{"href":"https:\/\/www.pilatre-de-rozier.com\/pbp\/wp-json\/wp\/v2\/posts\/2012","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pilatre-de-rozier.com\/pbp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pilatre-de-rozier.com\/pbp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pilatre-de-rozier.com\/pbp\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pilatre-de-rozier.com\/pbp\/wp-json\/wp\/v2\/comments?post=2012"}],"version-history":[{"count":1,"href":"https:\/\/www.pilatre-de-rozier.com\/pbp\/wp-json\/wp\/v2\/posts\/2012\/revisions"}],"predecessor-version":[{"id":2013,"href":"https:\/\/www.pilatre-de-rozier.com\/pbp\/wp-json\/wp\/v2\/posts\/2012\/revisions\/2013"}],"wp:attachment":[{"href":"https:\/\/www.pilatre-de-rozier.com\/pbp\/wp-json\/wp\/v2\/media?parent=2012"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pilatre-de-rozier.com\/pbp\/wp-json\/wp\/v2\/categories?post=2012"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pilatre-de-rozier.com\/pbp\/wp-json\/wp\/v2\/tags?post=2012"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}