{"id":48741,"date":"2026-09-02T01:31:35","date_gmt":"2026-09-02T01:31:35","guid":{"rendered":"https:\/\/geekdois.com\/medir-terreno-pelo-celular\/"},"modified":"2026-09-02T01:31:35","modified_gmt":"2026-09-02T01:31:35","slug":"measure-land-with-your-phone","status":"publish","type":"revidia_lp","link":"https:\/\/geekdois.com\/fr\/medir-terreno-pelo-celular\/","title":{"rendered":"Mesurer un terrain avec son t\u00e9l\u00e9phone portable\u00a0: quelle est la port\u00e9e du GPS\u00a0?"},"content":{"rendered":"<p>Mesurer un terrain en marchant, son t\u00e9l\u00e9phone portable \u00e0 la main, semble trop beau pour \u00eatre vrai \u2014 et pourtant, \u00e7a marche, dans une certaine mesure, que presque aucune application n&#039;explique.<\/p>\n<p>Cette limite est chiffr\u00e9e. Selon l&#039;agence am\u00e9ricaine qui g\u00e8re le syst\u00e8me, <b>Un t\u00e9l\u00e9phone portable \u00e9quip\u00e9 d&#039;un GPS permet de localiser pr\u00e9cis\u00e9ment un endroit dans un rayon d&#039;environ 4,9 m\u00e8tres en plein air.<\/b>. \u00c0 proximit\u00e9 des b\u00e2timents, des ponts ou des arbres, cela empire.<\/p>\n<div class=\"rev-features\"><br \/>\n<div class=\"rev-feature\"><span class=\"rev-feature__icon\" aria-hidden=\"true\"><i class=\"fas fa-satellite\"><\/i><\/span><div class=\"rev-feature__body\"><h3 class=\"rev-feature__title\">4,9 m\u00e8tres est le point de d\u00e9part.<\/h3><p class=\"rev-feature__text\">C&#039;est la pr\u00e9cision typique en ext\u00e9rieur. Chaque sommet du terrain porte cette erreur, et elle s&#039;accumule sur le p\u00e9rim\u00e8tre.<\/p><\/div><\/div><br \/>\n<div class=\"rev-feature\"><span class=\"rev-feature__icon\" aria-hidden=\"true\"><i class=\"fas fa-tree\"><\/i><\/span><div class=\"rev-feature__body\"><h3 class=\"rev-feature__title\">Les arbres et les murs ne font qu&#039;empirer les choses.<\/h3><p class=\"rev-feature__text\">Le signal est r\u00e9fl\u00e9chi ou bloqu\u00e9. C&#039;est en effectuant des mesures \u00e0 l&#039;int\u00e9rieur d&#039;une for\u00eat dense ou contre un mur \u00e9lev\u00e9 que l&#039;erreur augmente.<\/p><\/div><\/div><br \/>\n<div class=\"rev-feature\"><span class=\"rev-feature__icon\" aria-hidden=\"true\"><i class=\"fas fa-draw-polygon\"><\/i><\/span><div class=\"rev-feature__body\"><h3 class=\"rev-feature__title\">Les grandes surfaces pardonnent davantage.<\/h3><p class=\"rev-feature__text\">Une erreur de quelques m\u00e8tres seulement n&#039;a pas grande importance sur de grands hectares, mais elle compte \u00e9norm\u00e9ment sur une petite parcelle urbaine.<\/p><\/div><\/div><br \/>\n<div class=\"rev-feature\"><span class=\"rev-feature__icon\" aria-hidden=\"true\"><i class=\"fas fa-stamp\"><\/i><\/span><div class=\"rev-feature__body\"><h3 class=\"rev-feature__title\">L&#039;inscription n\u00e9cessite un g\u00e9om\u00e8tre.<\/h3><p class=\"rev-feature__text\">La documentation, les actes de propri\u00e9t\u00e9 et le g\u00e9or\u00e9f\u00e9rencement n\u00e9cessitent l&#039;intervention d&#039;un g\u00e9om\u00e8tre professionnel. Aucune application ne peut remplacer cela.<\/p><\/div><\/div><br \/>\n<\/div>\n<h2>Parcourez le p\u00e9rim\u00e8tre \u00e0 pied ou tracez-le sur la carte.<\/h2>\n<p>Les applications proposent deux m\u00e9thodes, et elles \u00e9chouent de mani\u00e8res diff\u00e9rentes.<\/p>\n<p><b>Marche<\/b>, Vous longez la limite et votre t\u00e9l\u00e9phone enregistre chaque point. Cette m\u00e9thode fonctionne bien en terrain d\u00e9gag\u00e9 et est la seule solution lorsque la limite n&#039;appara\u00eet pas sur l&#039;image satellite. Le probl\u00e8me est que chaque pas introduit une erreur de GPS, et marcher trop vite ou s&#039;arr\u00eater au mauvais endroit d\u00e9forme le polygone.<\/p>\n<p><b>En se basant sur l&#039;image satellite<\/b>, Vous marquez les coins avec votre doigt. La pr\u00e9cision d\u00e9pend ici de la qualit\u00e9 et de la mise \u00e0 jour de l&#039;image, et non du GPS\u00a0; elle est g\u00e9n\u00e9ralement plus stable sur un terrain pr\u00e9sentant une limite visible, comme une cl\u00f4ture ou un mur. \u00c0 l&#039;inverse, une image obsol\u00e8te affiche une limite qui a d\u00e9j\u00e0 chang\u00e9.<\/p>\n<h2>\u00c0 quoi sert ce num\u00e9ro ?<\/h2>\n<p>Il remplit de nombreuses fonctions pratiques : <b>Calculez la quantit\u00e9 de semences, d&#039;engrais ou de filets dont vous avez besoin.<\/b>, Pour estimer la valeur approximative d&#039;une zone, pour planifier la division d&#039;un terrain, pour v\u00e9rifier si une annonce immobili\u00e8re correspond \u00e0 la r\u00e9alit\u00e9.<\/p>\n<p>Ce syst\u00e8me n&#039;est pas adapt\u00e9 aux actes notari\u00e9s, aux inventaires, aux litiges de bornage ni au g\u00e9or\u00e9f\u00e9rencement dans le cadre du cadastre rural. Dans ces cas, la donn\u00e9e doit provenir d&#039;un lev\u00e9 topographique r\u00e9alis\u00e9 avec un \u00e9quipement appropri\u00e9, et la diff\u00e9rence de pr\u00e9cision entre les deux est de l&#039;ordre du m\u00e8tre au centim\u00e8tre.<\/p>\n<div class=\"rev-pros\"><div class=\"rev-pros__header\"><span class=\"rev-pros__header-icon\" aria-hidden=\"true\"><i class=\"fas fa-crosshairs\"><\/i><\/span><h2 class=\"rev-pros__header-title\">Comment mesurer avec moins d&#039;erreurs<\/h2><\/div><div class=\"rev-pros__list\"><br \/>\n<div class=\"rev-pro\"><span class=\"rev-pro__icon\" aria-hidden=\"true\"><i class=\"fas fa-satellite-dish\"><\/i><\/span><div class=\"rev-pro__body\"><h4 class=\"rev-pro__title\">Attendez que les satellites soient r\u00e9par\u00e9s.<\/h4><p class=\"rev-pro__text\">Ouvrez l&#039;application et attendez que la pr\u00e9cision se stabilise avant de commencer. Se promener imm\u00e9diatement est la principale source d&#039;erreur.<\/p><\/div><\/div><br \/>\n<div class=\"rev-pro\"><span class=\"rev-pro__icon\" aria-hidden=\"true\"><i class=\"fas fa-walking\"><\/i><\/span><div class=\"rev-pro__body\"><h4 class=\"rev-pro__title\">Marchez lentement et arr\u00eatez-vous aux coins des rues.<\/h4><p class=\"rev-pro__text\">Faire une pause de quelques secondes \u00e0 chaque sommet permet \u00e0 l&#039;appareil de stabiliser sa position avant de poursuivre.<\/p><\/div><\/div><br \/>\n<div class=\"rev-pro\"><span class=\"rev-pro__icon\" aria-hidden=\"true\"><i class=\"fas fa-redo\"><\/i><\/span><div class=\"rev-pro__body\"><h4 class=\"rev-pro__title\">Mesurer deux fois<\/h4><p class=\"rev-pro__text\">Si les deux mesures sont proches, la valeur est fiable. Si elles diff\u00e8rent sensiblement, l&#039;emplacement perturbe le signal.<\/p><\/div><\/div><br \/>\n<\/div><\/div>\n<h2>Foire aux questions<\/h2>\n<div class=\"collapsible\"><i class=\"fas fa-plus\"><\/i> La taille d&#039;un t\u00e9l\u00e9phone portable a-t-elle une valeur l\u00e9gale\u00a0?<\/div>\n<div class=\"content\">\n<p>Non. Pour la documentation et l&#039;enregistrement, un lev\u00e9 topographique r\u00e9alis\u00e9 par un professionnel qualifi\u00e9 est requis.<\/p>\n<\/div>\n<div class=\"collapsible\"><i class=\"fas fa-plus\"><\/i> Est-ce que \u00e7a fonctionne sans internet ?<\/div>\n<div class=\"content\">\n<p>Le GPS fonctionne sans internet. Seule la mise \u00e0 jour de l&#039;image satellite n\u00e9cessite une connexion\u00a0; il est donc conseill\u00e9 de t\u00e9l\u00e9charger la carte de la r\u00e9gion avant de partir sur le terrain.<\/p>\n<\/div>\n<div class=\"collapsible\"><i class=\"fas fa-plus\"><\/i> Pourquoi les choses se sont-elles pass\u00e9es diff\u00e9remment \u00e0 chaque fois ?<\/div>\n<div class=\"content\">\n<p>Variation du signal entre deux mesures. En terrain d\u00e9gag\u00e9, la diff\u00e9rence est faible\u00a0; \u00e0 proximit\u00e9 des bois ou des b\u00e2timents, elle augmente consid\u00e9rablement.<\/p>\n<\/div>\n<div class=\"collapsible\"><i class=\"fas fa-plus\"><\/i> Est-ce adapt\u00e9 \u00e0 un petit terrain urbain ?<\/div>\n<div class=\"content\">\n<p>Cela donne une id\u00e9e g\u00e9n\u00e9rale, mais c&#039;est l\u00e0 que l&#039;on peut commettre la plus grosse erreur\u00a0: quelques m\u00e8tres sur un terrain de 300 m\u00e8tres carr\u00e9s peuvent changer consid\u00e9rablement le r\u00e9sultat.<\/p>\n<\/div>\n<p>Sachant que la marge est de quelques m\u00e8tres, l&#039;application devient un outil de planification utile. Consid\u00e9r\u00e9e comme une mesure officielle, elle pose probl\u00e8me au bureau d&#039;\u00e9tat civil.<\/p>","protected":false},"featured_media":48765,"template":"","meta":{"_revidia_rewards_active":"","mobile-allow":"act","post-descricao":"","texto-interacao":"O que voc\u00ea quer ver agora?","desativar-content1":"","bt-1":"Ver os apps de GPS offline","lk-1":"https:\/\/geekdois.com\/gps-offline\/","bt-2":"","lk-2":"","bt-3":"","lk-3":"","bt-4":"","lk-4":"","button-style":"classic-green"},"categories":[],"class_list":["post-48741","revidia_lp","type-revidia_lp","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Medir Terreno pelo Celular: At\u00e9 Onde o GPS Chega - Geekdois<\/title>\n<meta name=\"description\" content=\"O GPS do celular tem cerca de 4,9 metros de raio de precis\u00e3o a c\u00e9u aberto. 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