{"id":852,"date":"2004-12-03T10:51:00","date_gmt":"2004-12-03T09:51:00","guid":{"rendered":"https:\/\/kids.esa.int\/satellite_navigation\/"},"modified":"2026-10-08T00:33:00","modified_gmt":"2026-10-07T22:33:00","slug":"satellite_navigation","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/satellite_navigation\/","title":{"rendered":"Satellitnavigering"},"content":{"rendered":"
\n

F\u00f6r l\u00e4nge sedan hittade de som seglade p\u00e5 havet sin v\u00e4g genom att studera solens, m\u00e5nens och stj\u00e4rnornas positioner. Sedan, omkring \u00e5r 1300, underl\u00e4ttade inf\u00f6randet av kompassen livet n\u00e5got f\u00f6r dessa navigat\u00f6rer.<\/p>\n<\/div>\n

I dag har rymdtekniken gjort det om\u00f6jligt f\u00f6r n\u00e5gon att g\u00e5 vilse. Varje person, bil, fartyg eller flygplan som \u00e4r utrustat med ett satellitnavigeringssystem kan fastst\u00e4lla sin position med en noggrannhet p\u00e5 15 till 20 meter.<\/p>\n

Satellitnavigering bygger p\u00e5 att en mottagare ber\u00e4knar sin position med hj\u00e4lp av signaler som s\u00e4nds ut av minst fyra satelliter.<\/p>\n

\"GPS\"
GPS<\/figcaption><\/figure>\n

Det system som vi idag anv\u00e4nder i vardagen utvecklades ursprungligen f\u00f6r milit\u00e4ra \u00e4ndam\u00e5l. Mellan 1960 och 1968 skickade den amerikanska milit\u00e4ren upp 23 navigationssatelliter f\u00f6r att underl\u00e4tta navigeringen f\u00f6r Polaris-ub\u00e5tarna.<\/p>\n

Dessa utvecklades s\u00e5 sm\u00e5ningom till det globala positioneringssystemet (GPS). Ett liknande system, kallat Glonass, inf\u00f6rdes av den ryska milit\u00e4ren. B\u00e5da dessa system \u00e4r nu tillg\u00e4ngliga f\u00f6r s\u00e5v\u00e4l civilt som milit\u00e4rt bruk. Det \u00e4r d\u00e4rf\u00f6r Europa ville ha ett eget, garanterat system.<\/p>\n

Europa har nu inf\u00f6rt ett system som kallas EGNOS, vilket f\u00f6rb\u00e4ttrar GPS-systemets noggrannhet. ESA och Europeiska gemenskapen arbetar dessutom gemensamt med att utveckla Europas eget civila (icke-milit\u00e4ra) navigationssystem. Systemet, som kallas Galileo, kommer att bli det f\u00f6rsta helt civila systemet f\u00f6r global navigering.<\/p>","protected":false},"excerpt":{"rendered":"

Long ago, people who sailed the sea found their way by studying the positions of the Sun, Moon and stars. Then, around 1300, the introduction of the compass made life […]<\/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\/2001\/01\/galileo2\/17866193-3-eng-GB\/Galileo.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2001\/01\/Galileo2","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-852","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\/852","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=852"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/852\/revisions"}],"predecessor-version":[{"id":4707,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/852\/revisions\/4707"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=852"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=852"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=852"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=852"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=852"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=852"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=852"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=852"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=852"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=852"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}