{"id":8808,"date":"2017-04-24T19:03:07","date_gmt":"2017-04-24T17:03:07","guid":{"rendered":"http:\/\/agora.xtec.cat\/formacio\/zenit\/?p=8808"},"modified":"2023-02-15T09:34:19","modified_gmt":"2023-02-15T08:34:19","slug":"p07_ud01-2-titol","status":"publish","type":"post","link":"https:\/\/projectes.xtec.cat\/zenit\/general\/p07_ud01-2-titol\/","title":{"rendered":"1.4. Trigonometria per geolocalitzar"},"content":{"rendered":"<div class=\"container\">\n<ul class=\"nav nav-tabs nav-pills\">\n<li class=\"nav-item\"><a class=\"nav-link active\" href=\"#consulta\" data-toggle=\"tab\">Consulta<\/a><\/li>\n<p>\t \t<!--\n\n<li class=\"nav-item\"><a class=\"nav-link\" href=\"#practica\" data-toggle=\"tab\">Practica<\/a><\/li>\n\n\n\t \t\n\n<li class=\"nav-item\"><a class=\"nav-link\" href=\"#aplica\" data-toggle=\"tab\">Aplica<\/a><\/li>\n\n\n\t \t\n\n<li class=\"nav-item\"><a class=\"nav-link\" href=\"#recursos\" data-toggle=\"tab\">Recursos<\/a><\/li>\n\n-->\n\t<\/ul>\n<div class=\"tab-content\" style=\"margin-top: 20px;\">\n<div id=\"consulta\" class=\"tab-pane active\">\n<h2>Sistemes de posicionament global (GPS)<\/h2>\n<p>El GPS \u00e9s un servei que permet als usuaris rebre informaci\u00f3 relacionada amb el seu posicionament i navegaci\u00f3 en la superf\u00edcie terrestre. El sistema GPS est\u00e0 format per tres segments; una xarxa de sat\u00e8l\u00b7lits, un centre de control i l&#8217;usuari <\/p>\n<p>Cada un dels sat\u00e8l\u00b7lits incorpora un rellotge at\u00f2mic de gran precisi\u00f3. El sat\u00e8l\u00b7lit transmet continuament la seva posici\u00f3 i l&#8217;hora. Aquests sat\u00e8l\u00b7lits orbiten al sobre la Terra a una altura d&#8217;uns 20000 km, i el senyal electromagn\u00e8tic, ones radio, es traslladen a una velocitat propera a la velocitat de la llum, 300000 m\/s. En conseq\u00fc\u00e8ncia el temps que necessiten per arribar al receptor GPS \u00e9s d&#8217;uns 67 ms. <\/p>\n<p>De manera an\u00e0loga a com estimem la dist\u00e0ncia a la que ens trobem del punt en el que ha caigut un raig en base a la difer\u00e8ncia de temps entre que veiem el llamp i sona el tro, podem establir la dist\u00e0ncia del punt on es troba el receptor GPS i el sat\u00e8l\u00b7lit. Tots els senyals procedents dels diferents sat\u00e8l\u00b7lits s&#8217;envien a la vegada donat que estan sincronitzats. Els receptors GPS poden calcular mitjan\u00e7ant trilateraci\u00f3 la posici\u00f3 global en la que es troben. El conjunt de sat\u00e8l\u00b7lits als que accedeix el receptor GPS constitueix un sistema de refer\u00e8ncia que permet calcular la ubicaci\u00f3 del receptor GPS, el seu rumb i la velocitat de despla\u00e7ament.<\/p>\n<div id=\"embed\" width=\"975\" height=\"675><object id=\"rvideo\" classid=\"clsid:D27CDB6E-AE6D-11cf-96B8-444553540000\"      width=\"975\" height=\"675\"      codebase=\"http:\/\/fpdownload.macromedia.com\/get\/flashplayer\/current\/swflash.cab\"><param name=\"allowScriptAccess\" value=\"always\" \/><param name=\"allowFullScreen\" value=\"true\" \/><param name=\"movie\" value=\"http:\/\/www.edu3.cat\/html\/swf\/video\/video2.swf\" \/><param name=\"quality\" value=\"high\" \/><param name=\"flashvars\" value=\"url=http:\/\/www.edu3.cat\/portal\/pls\/portal\/edu3tv.flash.get_av_info?p_hash=aae2952532bf0a053227&#038;embed=http:\/\/www.edu3.cat\/Edu3tv\/Fitxa?p_id=21263\"\/><param name=\"bgcolor\" value=\"#000000\" \/><embed id=\"rvideo\" height=\"675\" width=\"975\" flashvars=\"url=http:\/\/www.edu3.cat\/portal\/pls\/portal\/edu3tv.flash.get_av_info?p_hash=aae2952532bf0a053227&#038;embed=http:\/\/www.edu3.cat\/Edu3tv\/Fitxa?p_id=21263\" movie=\"http:\/\/www.edu3.cat\/html\/swf\/video\/video2.swf\" allowfullscreen=\"true\" allowscriptaccess=\"always\" quality=\"high\" bgcolor=\"#000000\" name=\"rvideo\" style=\"\" src=\"http:\/\/www.edu3.cat\/html\/swf\/video\/video2.swf\" type=\"application\/x-shockwave-flash\"\/><\/embed><\/object><\/div>\n<h3>Centre de control<\/h3>\n<\/p>\n<h3><\/h3>\n<\/p><\/div>\n<div id=\"practica\" class=\"tab-pane fade\">\n<h2>Practica<\/h2>\n<\/p><\/div>\n<div id=\"aplica\" class=\"tab-pane\">\n<h2>Aplica<\/h2>\n<\/p><\/div>\n<div id=\"recursos\" class=\"tab-pane\">\n<h2>Recursos<\/h2>\n<h3><\/h3>\n<\/p>\n<p>                <iframe loading=\"lazy\" src=\"http:\/\/www.rutasporgipuzkoa.com\/productos\/wp-content\/themes\/mi-plantilla\/images\/galileo.swf\" height=\"700\" width=\"1000\"><\/iframe>\n\t\t<\/div>\n<\/p><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<ul class=\"nav nav-tabs nav-pills\">\n<li class=\"nav-item\"><a class=\"nav-link active\" href=\"#consulta\" data-toggle=\"tab\">Consulta<\/a><\/li>\n<\/ul>\n<p>Sistemes de posicionament global (GPS)<br \/>\nEl GPS \u00e9s un servei que permet als usuaris rebre informaci\u00f3 relacionada amb el seu posicionament i navegaci\u00f3 en la superf\u00edcie terrestre. El sistema GPS est\u00e0 format per tres segments; una xarxa&hellip;  <a href=\"https:\/\/projectes.xtec.cat\/zenit\/general\/p07_ud01-2-titol\/\" title=\"Read 1.4. Trigonometria per geolocalitzar\">Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[1,330],"tags":[306,316],"class_list":["post-8808","post","type-post","status-publish","format-standard","hentry","category-general","category-obsterra","tag-plafo","tag-ud_posicionament"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/posts\/8808","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/comments?post=8808"}],"version-history":[{"count":4,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/posts\/8808\/revisions"}],"predecessor-version":[{"id":11397,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/posts\/8808\/revisions\/11397"}],"wp:attachment":[{"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/media?parent=8808"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/categories?post=8808"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/tags?post=8808"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}