{"id":190,"date":"2021-12-02T12:47:19","date_gmt":"2021-12-02T11:47:19","guid":{"rendered":"https:\/\/kids.esa.int\/spacecraft_galileo\/"},"modified":"2026-10-08T00:25:18","modified_gmt":"2026-10-07T22:25:18","slug":"spacecraft_galileo","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/spacecraft_galileo\/","title":{"rendered":"Galileo"},"content":{"rendered":"<div class=\"lede\">\n<p>Euroopan Galileo-navigointij\u00e4rjestelm\u00e4n ensimm\u00e4inen testisatelliitti laukaistiin joulukuussa 2005, ja toinen seurasi vuonna 2008. Kun j\u00e4rjestelm\u00e4 on toiminnassa, maapallon yl\u00e4puolella l\u00e4hes 24 000 km:n korkeudella kiert\u00e4\u00e4 30 satelliittia. N\u00e4in varmistetaan, ett\u00e4 horisontin yl\u00e4puolella on aina v\u00e4hint\u00e4\u00e4n nelj\u00e4 satelliittia.<\/p>\n<\/div>\n<p>Pieni vastaanotin poimii signaaleja Galileo-satelliiteista ja l\u00e4heisist\u00e4 maa-asemista. Sen avulla se pystyy laskemaan tarkka sijaintisi ja nopeutesi miss\u00e4 tahansa p\u00e4in maailmaa.<\/p>\n<p>Galileo ei korvaa nykyisi\u00e4 j\u00e4rjestelmi\u00e4, vaan toimii niiden rinnalla. Toisin kuin amerikkalaiset ja ven\u00e4l\u00e4iset j\u00e4rjestelm\u00e4t, Galileota ei kuitenkaan hallinnoida sotilasviranomaisten toimesta. N\u00e4in varmistetaan, ett\u00e4 j\u00e4rjestelm\u00e4 on aina k\u00e4ytett\u00e4viss\u00e4 auttaakseen liikkeell\u00e4 olevia ihmisi\u00e4 l\u00f6yt\u00e4m\u00e4\u00e4n tiens\u00e4. Galileolla on monia k\u00e4ytt\u00f6tarkoituksia:<\/p>\n<ul>\n<li>\n<p>Liikenteen sujuvuuden parantaminen<\/p>\n<\/li>\n<li>\n<p>Tietojen antaminen mink\u00e4 tahansa auton, kuorma-auton, aluksen tai lentokoneen sijainnista<\/p>\n<\/li>\n<li>\n<p>Auttaa syrj\u00e4isill\u00e4 seuduilla matkustavia tai seikkailijoita l\u00f6yt\u00e4m\u00e4\u00e4n tiens\u00e4<\/p>\n<\/li>\n<li>\n<p>Lentokoneiden laskeutumisen turvallisuuden parantaminen, erityisesti sumussa tai matalassa pilvipeitteess\u00e4<\/p>\n<\/li>\n<li>\n<p>Etsint\u00e4- ja pelastusjoukkojen avustaminen<\/p>\n<\/li>\n<li>\n<p>Sokeiden opastaminen<\/p>\n<\/li>\n<li>\n<p>Py\u00f6r\u00e4ilij\u00f6iden seuranta reaaliajassa<\/p>\n<\/li>\n<\/ul>\n<p>Toisin kuin GPS, k\u00e4ytt\u00e4j\u00e4t voivat aina vastaanottaa Galileo-signaalia, joten kyseess\u00e4 on todella luotettava j\u00e4rjestelm\u00e4.<\/p>","protected":false},"excerpt":{"rendered":"<p>The first test satellite in Europe&#8217;s Galileo navigation system was launched in December 2005, followed by a second one in 2008. When operational there will be 30 satellites circling nearly [&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\/10\/galileo_constellation2\/17866415-3-eng-GB\/Galileo_constellation.jpg","esa_banner_description":"Galileo constellation","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2000\/10\/Galileo_constellation2","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":[10,44,40],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-190","post","type-post","status-publish","format-standard","hentry","category-learn","category-spacecraft","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\/190","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=190"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/190\/revisions"}],"predecessor-version":[{"id":1333,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/190\/revisions\/1333"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=190"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=190"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=190"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=190"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=190"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=190"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=190"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}