{"id":2193,"date":"2024-02-14T12:13:07","date_gmt":"2024-02-14T11:13:07","guid":{"rendered":"https:\/\/calldrone.fr\/?page_id=2193"},"modified":"2024-02-15T10:38:03","modified_gmt":"2024-02-15T09:38:03","slug":"lidar","status":"publish","type":"page","link":"https:\/\/calldrone.fr\/?page_id=2193","title":{"rendered":"Lidar"},"content":{"rendered":"
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Le Lidar<\/h2>\n <\/div>\n <\/div>\n
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La t\u00e9l\u00e9d\u00e9tection par laser ou lidar<\/strong>, est une technique de mesure \u00e0 distance fond\u00e9e sur l’analyse des propri\u00e9t\u00e9s d’un faisceau de lumi\u00e8re renvoy\u00e9 vers son \u00e9metteur.<\/p>\n

Le principe de la t\u00e9l\u00e9m\u00e9trie (d\u00e9termination de la distance d\u2019un objet), qui concerne une grande partie des applications du lidar, requiert g\u00e9n\u00e9ralement l\u2019utilisation d\u2019un laser impulsionnel. La distance est donn\u00e9e par la mesure du\n d\u00e9lai (aussi appel\u00e9 \u00ab temps de vol \u00bb) entre l\u2019\u00e9mission d\u2019une impulsion et la d\u00e9tection d\u2019une impulsion r\u00e9fl\u00e9chie.<\/p>\n

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Principe de fonctionnement<\/h2>\n <\/div>\n <\/div>\n
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De mani\u00e8re g\u00e9n\u00e9rale, le fonctionnement du lidar ressemble \u00e0 celui du\n radar<\/a> (bas\u00e9 sur l’\n \u00e9cholocalisation<\/a>), la diff\u00e9rence \u00e9tant le\n domaine spectral<\/a> des\n ondes \u00e9lectromagn\u00e9tiques<\/a> employ\u00e9es. Alors que le radar fonctionne dans le domaine des\n micro-ondes<\/a> (\n fr\u00e9quences<\/a> de 1 \u00e0 100 GHz,\n longueurs d\u2019onde<\/a> millim\u00e9triques et centim\u00e9triques), le lidar est fond\u00e9 sur des\n lasers<\/a> rayonnant dans le domaine\n infrarouge<\/a>, le domaine\n visible<\/a> ou le domaine\n ultraviolet<\/a> proche (fr\u00e9quences au-del\u00e0 de 10 THz, longueurs d\u2019onde de 250 nm \u00e0 10 \u00b5m). Dans les deux cas, l\u2019onde \u00e9lectromagn\u00e9tique \u00e9mise est\n coh\u00e9rente<\/a> et\n polaris\u00e9e<\/a>. Mais dans le domaine spectral visible, elle est beaucoup plus directive et elle peut interagir avec des objets de taille microscopique.
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Un lidar est un syst\u00e8me\n opto-\u00e9lectronique<\/a> compos\u00e9 d\u2019un \u00e9metteur laser, d\u2019un r\u00e9cepteur comprenant un collecteur de lumi\u00e8re (\n t\u00e9lescope<\/a> ou autre optique) et un\n photod\u00e9tecteur<\/a> qui transforme la lumi\u00e8re en\n signal \u00e9lectrique<\/a>, ainsi que d\u2019une cha\u00eene \u00e9lectronique de\n traitement du signal<\/a> qui extrait l\u2019information recherch\u00e9e.<\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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Nos r\u00e9alisations<\/h2>\n <\/div>\n <\/div>\n
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Voici quelques exemples qui ont \u00e9t\u00e9 r\u00e9alis\u00e9s pour nos clients.\n
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Le Lidar La t\u00e9l\u00e9d\u00e9tection par laser ou lidar, est une technique de mesure \u00e0 distance fond\u00e9e sur l’analyse des propri\u00e9t\u00e9s d’un faisceau de lumi\u00e8re renvoy\u00e9 vers son \u00e9metteur. Le principe de la t\u00e9l\u00e9m\u00e9trie (d\u00e9termination de la distance d\u2019un objet), qui concerne une grande partie des applications du lidar, requiert g\u00e9n\u00e9ralement l\u2019utilisation d\u2019un laser impulsionnel. La […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-templates\/full-width-page.php","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"_links":{"self":[{"href":"https:\/\/calldrone.fr\/index.php?rest_route=\/wp\/v2\/pages\/2193"}],"collection":[{"href":"https:\/\/calldrone.fr\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/calldrone.fr\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/calldrone.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/calldrone.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2193"}],"version-history":[{"count":3,"href":"https:\/\/calldrone.fr\/index.php?rest_route=\/wp\/v2\/pages\/2193\/revisions"}],"predecessor-version":[{"id":2235,"href":"https:\/\/calldrone.fr\/index.php?rest_route=\/wp\/v2\/pages\/2193\/revisions\/2235"}],"wp:attachment":[{"href":"https:\/\/calldrone.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2193"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}