{"id":10020,"date":"2020-08-25T09:20:54","date_gmt":"2020-08-25T07:20:54","guid":{"rendered":"https:\/\/www.yellowscan.com\/knowledge\/atteindre-une-precision-de-lordre-du-centimetre-avec-lidar\/"},"modified":"2025-05-14T10:58:31","modified_gmt":"2025-05-14T08:58:31","slug":"reaching-centimeter-level-accuracy-with-lidar","status":"publish","type":"ys_knowledge","link":"https:\/\/www.yellowscan.com\/fr\/knowledge\/reaching-centimeter-level-accuracy-with-lidar\/","title":{"rendered":"Atteindre une pr\u00e9cision de l&rsquo;ordre du centim\u00e8tre avec LiDAR"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"10020\" class=\"elementor elementor-10020 elementor-1247\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a4dea0b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a4dea0b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-566c4f2\" data-id=\"566c4f2\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-12e7319 elementor-widget elementor-widget-text-editor\" data-id=\"12e7319\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>YellowScan a plus d&rsquo;une fa\u00e7on d&rsquo;atteindre la pr\u00e9cision centim\u00e9trique.<\/h2>\n<p>Les solutions LiDAR de YellowScan utilisent des cartes INS assist\u00e9es par GNSS d&rsquo;Applanix, ce qui permet d&rsquo;utiliser plusieurs m\u00e9thodes de post-traitement pour atteindre une pr\u00e9cision de l&rsquo;ordre du centim\u00e8tre.<\/p>\n<p>L&rsquo;utilisation d&rsquo;un r\u00e9cepteur GNSS \u00e0 double fr\u00e9quence, comme celui utilis\u00e9 dans les syst\u00e8mes LiDAR YellowScan, permet de se localiser avec une pr\u00e9cision de l&rsquo;ordre du m\u00e8tre. Cependant, la plupart des travaux d&rsquo;arpentage actuels exigent une pr\u00e9cision de l&rsquo;ordre du centim\u00e8tre, voire plus. Comment y parvenir ? Pour obtenir ce niveau de pr\u00e9cision, le LiDAR et sa trajectoire de vol doivent \u00eatre corrig\u00e9s. Pour ce faire, une technique courante consiste \u00e0 utiliser une source distincte d&rsquo;observations GNSS, d&rsquo;o\u00f9 le terme typique de \u00ab\u00a0diff\u00e9rentiel\u00a0\u00bb appliqu\u00e9 \u00e0 ces m\u00e9thodes. Ces sources de corrections diff\u00e9rentielles peuvent provenir de l&rsquo;enregistrement d&rsquo;un r\u00e9cepteur \u00ab\u00a0physique\u00a0\u00bb, solidement implant\u00e9 sur la plan\u00e8te Terre, souvent appel\u00e9 station de base, ou d&rsquo;une station de r\u00e9f\u00e9rence \u00ab\u00a0virtuelle\u00a0\u00bb.<\/p>\n<p>Nous pouvons d\u00e9finir les r\u00e9cepteurs physiques comme votre propre r\u00e9cepteur GNSS bi-fr\u00e9quence install\u00e9 sur le terrain \u00e0 proximit\u00e9 de la zone d&rsquo;\u00e9tude, positionn\u00e9 sur un point de rep\u00e8re connu ou sur une position inconnue. Les \u00ab\u00a0avantages\u00a0\u00bb de cette m\u00e9thode sont qu&rsquo;elle vous appartient, que vous pouvez la toucher, que vous la contr\u00f4lez et que vous d\u00e9cidez de l&rsquo;endroit o\u00f9 elle sera install\u00e9e. Les \u00ab\u00a0inconv\u00e9nients\u00a0\u00bb, en revanche, sont qu&rsquo;il s&rsquo;agit d&rsquo;un mat\u00e9riel qui a un co\u00fbt et qui doit \u00eatre entretenu. Une autre approche consiste \u00e0 utiliser un r\u00e9cepteur GNSS faisant partie d&rsquo;un r\u00e9seau national (CORS, EUREF, RGP&#8230;) situ\u00e9 \u00e0 20 km ou plus pr\u00e8s du site d&rsquo;\u00e9tude. Le \u00ab\u00a0pour\u00a0\u00bb est qu&rsquo;il s&rsquo;agit d&rsquo;un service gratuit \u00e0 un poste certifi\u00e9. Les inconv\u00e9nients sont que le service peut \u00eatre interrompu, qu&rsquo;il peut \u00eatre \u00e9loign\u00e9 du lieu de l&rsquo;enqu\u00eate, que la grille est grossi\u00e8re, que la ligne de base est longue et qu&rsquo;il n&rsquo;est pas le v\u00f4tre.<\/p>\n<p>Si vous \u00eates \u00e0 la recherche d&rsquo;une r\u00e9f\u00e9rence virtuelle, YellowScan int\u00e8gre la technologie Trimble\/Applanix dans ses solutions, vous donnant ainsi acc\u00e8s \u00e0 des m\u00e9thodes de post-traitement suppl\u00e9mentaires sans avoir \u00e0 poss\u00e9der une station de base. Cela inclut le service d&rsquo;abonnement RTX de Trimble, disponible dans le monde entier, qui vous permet de traiter votre trajectoire en quelques clics. Les \u00ab\u00a0avantages\u00a0\u00bb sont qu&rsquo;il est mondial, rapide et qu&rsquo;il ne n\u00e9cessite pas de mat\u00e9riel suppl\u00e9mentaire. Les \u00ab\u00a0inconv\u00e9nients\u00a0\u00bb, c&rsquo;est qu&rsquo;il y a toujours un co\u00fbt pour le service !<\/p>\n<p>Gr\u00e2ce \u00e0 la plateforme YellowScan, vous pouvez utiliser la Smartbase Applanix pour cr\u00e9er une station de r\u00e9f\u00e9rence virtuelle (VRS) au centre de votre zone d&rsquo;\u00e9tude en vous basant sur vos r\u00e9seaux GNSS nationaux. Les \u00ab\u00a0avantages\u00a0\u00bb sont qu&rsquo;aucun mat\u00e9riel suppl\u00e9mentaire n&rsquo;est n\u00e9cessaire et les \u00ab\u00a0inconv\u00e9nients\u00a0\u00bb sont que cela d\u00e9pend du pays et que le co\u00fbt du service est un facteur !<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2f874676 el-section-img-x1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2f874676\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1d1c9407\" data-id=\"1d1c9407\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7abaf198 elementor-widget elementor-widget-image\" data-id=\"7abaf198\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"500\" height=\"392\" src=\"https:\/\/www.yellowscan.com\/wp-content\/uploads\/2022\/08\/DSC08753-1.jpg\" class=\"attachment-large size-large wp-image-1250\" alt=\"\" srcset=\"https:\/\/www.yellowscan.com\/wp-content\/uploads\/2022\/08\/DSC08753-1.jpg 500w, https:\/\/www.yellowscan.com\/wp-content\/uploads\/2022\/08\/DSC08753-1-300x235.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-30303cc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"30303cc\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-216d8de\" data-id=\"216d8de\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-33a90c8 elementor-widget elementor-widget-text-editor\" data-id=\"33a90c8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Consultez notre <a href=\"https:\/\/www.youtube.com\/channel\/UCWkoXN1A5Yxc-kWru02tM9A?cbrd=1&amp;ucbcb=1\">cha\u00eene YouTube<\/a> pour plus d&rsquo;informations et une comparaison de ces m\u00e9thodes de pr\u00e9cision au centim\u00e8tre pr\u00e8s ou visionnez notre webinaire <a href=\"https:\/\/www.yellowscan.com\/webinars\/use-of-applanix-pospac-uav-mms-in-the-yellowscan-workflow\/\">\u00ab\u00a0Utilisation d&rsquo;Applanix POSPac UAV\/MMS dans le flux de travail de YellowScan\u00a0\u00bb<\/a>.<\/p>\n<p><em>N.B. Auteur L\u00e9a Moussi. Le contenu de cet article est prot\u00e9g\u00e9 par le droit d&rsquo;auteur<\/em>.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-47980308 el-cta elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"47980308\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-67959f0a\" data-id=\"67959f0a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-647e2680 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"647e2680\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-56a70a65\" data-id=\"56a70a65\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-722c966d elementor-widget elementor-widget-text-editor\" data-id=\"722c966d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4>D\u00e9couvrez nos solutions LiDAR<\/h4>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-30515c10\" data-id=\"30515c10\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-86cbdff elementor-button-success elementor-widget elementor-widget-button\" data-id=\"86cbdff\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.yellowscan.com\/fr\/products\/\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">En savoir plus<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"featured_media":2913,"menu_order":285,"template":"","meta":{"_acf_changed":false,"content-type":""},"categories":[29],"class_list":["post-10020","ys_knowledge","type-ys_knowledge","status-publish","has-post-thumbnail","hentry","category-article"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>3 fa\u00e7ons d&#039;atteindre 1 cm de pr\u00e9cision avec YellowScan<\/title>\n<meta name=\"description\" content=\"3 fa\u00e7ons diff\u00e9rentes d&#039;atteindre une pr\u00e9cision de l&#039;ordre du centim\u00e8tre pour vos lev\u00e9s LiDAR, en utilisant les syst\u00e8mes LiDAR YellowScan.\" \/>\n<meta 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