{"id":825,"date":"2004-12-02T15:50:00","date_gmt":"2004-12-02T14:50:00","guid":{"rendered":"https:\/\/kids.esa.int\/ground_stations\/"},"modified":"2026-10-08T00:32:42","modified_gmt":"2026-10-07T22:32:42","slug":"ground_stations","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/ground_stations\/","title":{"rendered":"Maasemat"},"content":{"rendered":"
\n

Euroopan avaruusoperaatiokeskus (ESOC) on kytketty maailmanlaajuiseen maa-asemaverkostoon.<\/p>\n<\/div>\n

Laukaisun j\u00e4lkeen satelliitin tiedot l\u00e4hetet\u00e4\u00e4n n\u00e4ille maa-asemille ja sielt\u00e4 edelleen ESOC:iin. N\u00e4iden tietojen avulla lasketaan kiertorata ja tarkistetaan satelliitin toimintakunto 24 tuntia vuorokaudessa, seitsem\u00e4n\u00e4 p\u00e4iv\u00e4n\u00e4 viikossa.<\/p>\n

Verkostoon kuuluu useita suuria mittausasemia Euroopassa ja Australiassa, muun muassa Kiruna Ruotsissa, Redu Belgiassa sek\u00e4 Villafranca ja Cebreros Espanjassa.<\/p>\n

Muualle maailmaan on rakennettu joitakin pienempi\u00e4 asemia, muun muassa Kourouun, joka on Euroopan avaruuskeskuksena Etel\u00e4-Amerikassa, sek\u00e4 Portugalin Santa Marian saarelle. N\u00e4it\u00e4 k\u00e4ytet\u00e4\u00e4n p\u00e4\u00e4asiassa laukaisun ja teht\u00e4v\u00e4n alkuvaiheiden aikana.<\/p>\n

Vuonna 2003 rakennettiin uusi 35-metrinen antenni New Norciaan, Perthin l\u00e4helle Australiaan. T\u00e4m\u00e4 120 tonnia painava j\u00e4ttim\u00e4inen lautasantenni on suunniteltu viestint\u00e4\u00e4n syv\u00e4n avaruuden tutkimuslentojen, kuten Rosettan ja Mars Expressin, kanssa. Sen pinta on eritt\u00e4in sile\u00e4, eik\u00e4 siin\u00e4 ole yli 0,3 mm:n korkuisia kohoumia. Vuonna 2005 rakennettiin samanlainen antenni Cebrerosiin, Espanjaan, ja uusi antenni liitet\u00e4\u00e4n verkkoon vuonna 2012 Malarg\u00fcess\u00e4, Argentiinassa.<\/p>\n

Maasemat on suunniteltu toimimaan erilaisilla radiotaajuuksilla, jotka ovat samanlaisia kuin matkapuhelimissa k\u00e4ytett\u00e4v\u00e4t. Ne ovat niin herkki\u00e4, ett\u00e4 ne pystyv\u00e4t havaitsemaan miljoonien kilometrien p\u00e4\u00e4ss\u00e4 olevasta avaruusaluksesta tulevia signaaleja, joiden teho vastaa tavallisen hehkulampun tehoa.<\/p>","protected":false},"excerpt":{"rendered":"

The European Space Operations Centre (ESOC) is linked to a worldwide network of ground stations. After a launch, data from the satellite is sent to these ground stations and then […]<\/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\/2003\/02\/australia_-_esa_deep_space_ground_station2\/17873741-2-eng-GB\/Australia_-_ESA_deep_space_ground_station.jpg","esa_banner_description":"Australia - ESA deep space ground station","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/02\/Australia_-_ESA_deep_space_ground_station2","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":[10,65,40],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-825","post","type-post","status-publish","format-standard","hentry","category-learn","category-mission-control","category-technology","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/825","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/comments?post=825"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/825\/revisions"}],"predecessor-version":[{"id":1968,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/825\/revisions\/1968"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=825"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=825"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=825"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=825"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=825"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=825"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=825"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=825"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=825"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=825"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}