{"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\/da\/olympus_and_artemis\/","title":{"rendered":"Olympus og Artemis"},"content":{"rendered":"<div class=\"lede\">\n<p>ESA har arbejdet med satellitkommunikation siden 1970\u2019erne. Allerede i 1980 blev organisationens Orbital Test Satellite brugt til videoforbindelser mellem grupper i Tyskland og Storbritannien. Den videreformidlede desuden n\u00f8dopkald, efter at en brand havde \u00f8delagt jordbaserede systemer i Lyon.<\/p>\n<\/div>\n<p>Kort tid efter skabte en satellit ved navn Marecs et gennembrud inden for mobilkommunikation. I stedet for at benytte up\u00e5lidelig kortb\u00f8lgeradio kunne man nu bruge satellittelefoner til at ringe fra skib til land.<\/p>\n<p>I slutningen af 1980\u2019erne og 1990\u2019erne blev der opsendt fire ECS-satellitter. Hver af dem kunne h\u00e5ndtere 12.000 telefonforbindelser og 10 tv-kanaler i hele Europa.<\/p>\n<p>Fremskridt inden for direkte transmission fra satellit til parabolantenner p\u00e5 hustagene kom med ESA\u2019s Olympus-satellit i 1989. Olympus blev ogs\u00e5 brugt til den f\u00f8rste dataoverf\u00f8rsel mellem to satellitter.<\/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 seneste fremskridt stammer fra en satellit ved navn Artemis. Den 30. november 2001 blev den brugt til den f\u00f8rste nogensinde transmission af billeder ved hj\u00e6lp af en laserstr\u00e5le. Der blev sendt perfekte billeder fra SPOT 4-satellitten, der kredser i en h\u00f8jde af 832 km, til Artemis, der befinder sig 31 000 km over Jorden.<\/p>\n<p>I dag bruges Artemis til at sende billeder og enorme datam\u00e6ngder fra Envisat til ESA-centret i n\u00e6rheden af 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\/da\/wp-json\/wp\/v2\/posts\/853","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/comments?post=853"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/853\/revisions"}],"predecessor-version":[{"id":4708,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/853\/revisions\/4708"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=853"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=853"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=853"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=853"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=853"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=853"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=853"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=853"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=853"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=853"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}