{"id":853,"date":"2004-12-02T07:58:00","date_gmt":"2004-12-02T06:58:00","guid":{"rendered":"https:\/\/kids.esa.int\/olympus_and_artemis\/"},"modified":"2026-10-08T00:33:00","modified_gmt":"2026-10-07T22:33:00","slug":"olympus_and_artemis","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/olympus_and_artemis\/","title":{"rendered":"Olympus och Artemis"},"content":{"rendered":"<div class=\"lede\">\n<p>ESA har arbetat med satellitkommunikation sedan 1970-talet. Redan 1980 anv\u00e4ndes organisationens testsatellit \u201dOrbital Test Satellite\u201d f\u00f6r videol\u00e4nkar mellan grupper i Tyskland och Storbritannien. Den vidarebefordrade \u00e4ven n\u00f6dsamtal efter att en brand f\u00f6rst\u00f6rt marksystemet i Lyon.<\/p>\n<\/div>\n<p>Kort d\u00e4refter innebar satelliten Marecs ett genombrott inom mobil telekommunikation. Ist\u00e4llet f\u00f6r att anv\u00e4nda op\u00e5litlig kortv\u00e5gsradio kunde man nu anv\u00e4nda satellittelefoner f\u00f6r att ringa fr\u00e5n fartyg till land.<\/p>\n<p>Under slutet av 1980-talet och 1990-talet skickades fyra ECS-satelliter upp. Var och en av dem kunde hantera 12 000 telefonf\u00f6rbindelser och 10 TV-kanaler \u00f6ver hela Europa.<\/p>\n<p>Framstegen inom direktuts\u00e4ndningar fr\u00e5n satellit till takantenner kom i och med ESA:s satellit Olympus \u00e5r 1989. Olympus anv\u00e4ndes ocks\u00e5 f\u00f6r den f\u00f6rsta data\u00f6verf\u00f6ringen mellan tv\u00e5 satelliter.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"2925\" data-credit=\"ESA - J. Huart\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2000\/09\/Artemis2\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2000\/09\/artemis2\/17865972-3-eng-GB\/Artemis.jpg\" alt=\"Artemis\"><figcaption>Artemis<\/figcaption><\/figure>\n<p>De senaste framstegen har gjorts med hj\u00e4lp av en satellit som heter Artemis. Den 30 november 2001 anv\u00e4ndes den f\u00f6r den allra f\u00f6rsta bild\u00f6verf\u00f6ringen med hj\u00e4lp av en laserstr\u00e5le. Perfekta bilder skickades fr\u00e5n satelliten SPOT 4, som kretsar i en bana p\u00e5 832 km, till Artemis, 31 000 km ovanf\u00f6r jorden.<\/p>\n<p>I dag anv\u00e4nds Artemis f\u00f6r att skicka bilder och enorma datam\u00e4ngder fr\u00e5n Envisat till ESA:s centrum n\u00e4ra Rom.<\/p>","protected":false},"excerpt":{"rendered":"<p>ESA has been working on satellite communications since the 1970s. As early as 1980, its Orbital Test Satellite was being used for video links between groups in Germany and the [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2000\/09\/artist_s_impression_of_olympus_in_orbit2\/17865897-3-eng-GB\/Artist_s_impression_of_Olympus_in_orbit.gif","esa_banner_description":"Artist's impression of Olympus in orbit","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2000\/09\/Artist_s_impression_of_Olympus_in_orbit2","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[10,54,40],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-853","post","type-post","status-publish","format-standard","hentry","category-learn","category-space-technologies-on-earth","category-technology","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/853","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/comments?post=853"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/853\/revisions"}],"predecessor-version":[{"id":4708,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/853\/revisions\/4708"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=853"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=853"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=853"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=853"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=853"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=853"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=853"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=853"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=853"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=853"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}