{"id":1331,"date":"2022-09-24T09:05:48","date_gmt":"2022-09-24T09:05:48","guid":{"rendered":"https:\/\/insyte.website\/WordPress\/?post_type=glossary&#038;p=1331"},"modified":"2022-09-26T09:24:58","modified_gmt":"2022-09-26T09:24:58","slug":"nmea","status":"publish","type":"glossary","link":"https:\/\/insyte.website\/WordPress\/glossary\/nmea\/","title":{"rendered":"NMEA"},"content":{"rendered":"<p class=\"has-theme-palette-1-color has-text-color has-medium-font-size\">1 &ndash; Pr&eacute;sentation<\/p>\n\n\n\n<p>Pour permettre &agrave; des p&eacute;riph&eacute;riques informatiques de &laquo; dialoguer &raquo; entre eux, en r&eacute;seau, il faut que les messages &eacute;chang&eacute;s respectent une syntaxe commune. On d&eacute;finit ce qu&rsquo;on appelle un protocole, c&rsquo;est &agrave; dire un ensemble de normes permettant &agrave; diff&eacute;rents p&eacute;riph&eacute;riques informatiques de dialoguer entre eux en r&eacute;seau.<br>NMEA est &agrave; l&rsquo;origine de nombreux standards et en particulier du Standard NMEA-0183. Dans ce qui suit, le Standard NMEA est d&eacute;fini &laquo;&nbsp;simplement&nbsp;&raquo; et uniquement comme &eacute;tant le protocole de transmission des donn&eacute;es entre les instruments et &eacute;quipements &eacute;lectroniques li&eacute;s au GPS.<\/p>\n\n\n\n<p class=\"has-theme-palette-1-color has-text-color has-medium-font-size\">2 &ndash; DEFINITION DU STANDARD NMEA-0183<\/p>\n\n\n\n<p>Sous ce standard, toutes les donn&eacute;es sont transmises sous la forme des caract&egrave;res ASCII, tous imprimables, ainsi que les caract&egrave;res [CR] Retour Chariot et [LF] Retour &agrave; la ligne, &agrave; la vitesse de transmission de 4800 bauds.<\/p>\n\n\n\n<p>Les donn&eacute;es sont transmises sous forme de trames (sentences, phrases).<br>Chaque trame commence par le caract&egrave;re <strong>$<\/strong> <\/p>\n\n\n\n<p>Suivi par un groupe de 2 lettres pour l&rsquo;identifiant du r&eacute;cepteur. (Non limitatif) :<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>GP <\/strong>pour Global Positioning System.<\/li><li><strong>LC <\/strong>Loran-C receiver.<\/li><li><strong>OM <\/strong>Omega Navigation receiver.<\/li><li><strong>II <\/strong>Integrated Instrumentation (eg. AutoHelm Seatalk system).<\/li><\/ul>\n\n\n\n<p>Puis un groupe de 3 lettres pour l&rsquo;identifiant de la trame. :<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>GGA <\/strong>: pour GPS Fix et Date. <\/li><li><strong>GLL <\/strong>: pour Positionnement G&eacute;ographique Longitude &ndash; Latitude.<\/li><li><strong>GSA <\/strong>: pour DOP et satellites actifs.<\/li><li><strong>GSV <\/strong>: pour Satellites visibles.<\/li><li><strong>VTG <\/strong>: pour Direction (cap) et vitesse de d&eacute;placement (en noeuds et Km\/h).<\/li><li><strong>RMC<\/strong>: pour donn&eacute;es minimales exploitables sp&eacute;cifiques.<\/li><\/ul>\n\n\n\n<p>Suivent ensuite un certain nombre de champs s&eacute;par&eacute;s par une &laquo;&nbsp;virgule&nbsp;&raquo;. Le r&ocirc;le de la virgule est d&rsquo;&ecirc;tre le s&eacute;parateur de champs, qui permet la d&eacute;-concat&eacute;nation des donn&eacute;es dans le programme de traitement des donn&eacute;es, calculateur, navigateur.<\/p>\n\n\n\n<p>Et enfin un champs optionnel dit checksum pr&eacute;c&eacute;d&eacute; du signe <strong>*<\/strong>, qui repr&eacute;sente le OR exclusif de tous les caract&egrave;res compris entre $ et * (sauf les bornes $ et&nbsp;*), certaines trames exigent le checksum.<\/p>\n\n\n\n<p>Suit la fermeture de la s&eacute;quence avec un <strong>[CR][LF]<\/strong>.<\/p>\n\n\n\n<p>Un total de 82 caract&egrave;res maximum pour une trame.<\/p>\n\n\n\n<p>Et on passe &agrave; la trame suivante..<\/p>\n\n\n\n<p class=\"has-theme-palette-1-color has-text-color has-medium-font-size\">3 -La trame : GGA.<\/p>\n\n\n\n<p>Par exemple de trame <strong>GP<\/strong>S de type <strong>GGA <\/strong>: $GPGGA,064036.289,4836.5375,N,00740.9373,E,1,04,3.2,200.2,M,,,,0000*0E<br><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-120-1024x290.png\" alt=\"\" class=\"wp-image-1340\" width=\"823\" height=\"233\" srcset=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-120-1024x290.png 1024w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-120-300x85.png 300w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-120-768x218.png 768w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-120.png 1271w\" sizes=\"auto, (max-width: 823px) 100vw, 823px\"\/><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-121.png\" alt=\"\" class=\"wp-image-1341\" width=\"873\" height=\"345\" srcset=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-121.png 944w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-121-300x119.png 300w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-121-768x303.png 768w\" sizes=\"auto, (max-width: 873px) 100vw, 873px\"\/><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"392\" src=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-115-1024x392.png\" alt=\"\" class=\"wp-image-1334\" srcset=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-115-1024x392.png 1024w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-115-300x115.png 300w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-115-768x294.png 768w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-115.png 1101w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"\/><\/figure>\n<\/div>\n\n\n<p class=\"has-theme-palette-1-color has-text-color has-medium-font-size\">4 &ndash; La trame : GLL<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"890\" height=\"312\" src=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-114.png\" alt=\"\" class=\"wp-image-1333\" srcset=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-114.png 890w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-114-300x105.png 300w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-114-768x269.png 768w\" sizes=\"auto, (max-width: 890px) 100vw, 890px\"\/><\/figure>\n<\/div>\n\n\n<p class=\"has-theme-palette-1-color has-text-color has-medium-font-size\">5 &ndash; La Trame : GSA<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"435\" src=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-116-1024x435.png\" alt=\"\" class=\"wp-image-1335\" srcset=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-116-1024x435.png 1024w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-116-300x127.png 300w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-116-768x326.png 768w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-116.png 1060w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"\/><\/figure>\n<\/div>\n\n\n<p class=\"has-theme-palette-1-color has-text-color has-medium-font-size\">6 &ndash; La trame : GSV<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"487\" src=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-117-1024x487.png\" alt=\"\" class=\"wp-image-1336\" srcset=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-117-1024x487.png 1024w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-117-300x143.png 300w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-117-768x365.png 768w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-117.png 1104w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"\/><\/figure>\n<\/div>\n\n\n<p class=\"has-theme-palette-1-color has-text-color has-medium-font-size\">7 -La trame : VTG<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"888\" height=\"295\" src=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-118.png\" alt=\"\" class=\"wp-image-1337\" srcset=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-118.png 888w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-118-300x100.png 300w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-118-768x255.png 768w\" sizes=\"auto, (max-width: 888px) 100vw, 888px\"\/><\/figure>\n<\/div>\n\n\n<p class=\"has-theme-palette-1-color has-text-color has-medium-font-size\">8 &ndash; La Trame RMC<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"345\" src=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-119-1024x345.png\" alt=\"\" class=\"wp-image-1338\" srcset=\"https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-119-1024x345.png 1024w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-119-300x101.png 300w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-119-768x259.png 768w, https:\/\/insyte.website\/WordPress\/wp-content\/uploads\/2022\/09\/image-119.png 1113w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"\/><\/figure>\n<\/div>\n\n\n<p>Activit&eacute;s sur les Trames NMEA<\/p>\n\n\n<style>.wp-block-kadence-advancedbtn.kb-btns_804eb2-f2{gap:var(--global-kb-gap-xs, 0.5rem );justify-content:flex-start;align-items:center;}.kt-btns_804eb2-f2 .kt-button{font-weight:normal;font-style:normal;}.kt-btns_804eb2-f2 .kt-btn-wrap-0{margin-right:5px;}.wp-block-kadence-advancedbtn.kt-btns_804eb2-f2 .kt-btn-wrap-0 .kt-button{color:#555555;border-color:#555555;}.wp-block-kadence-advancedbtn.kt-btns_804eb2-f2 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns_804eb2-f2 .kt-btn-wrap-0 .kt-button:focus{color:#ffffff;border-color:#444444;}.wp-block-kadence-advancedbtn.kt-btns_804eb2-f2 .kt-btn-wrap-0 .kt-button::before{display:none;}.wp-block-kadence-advancedbtn.kt-btns_804eb2-f2 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns_804eb2-f2 .kt-btn-wrap-0 .kt-button:focus{background:#444444;}.kt-btns_804eb2-f2 .kt-btn-wrap-1{margin-right:5px;}.wp-block-kadence-advancedbtn.kt-btns_804eb2-f2 .kt-btn-wrap-1 .kt-button{color:#555555;border-color:#555555;}.wp-block-kadence-advancedbtn.kt-btns_804eb2-f2 .kt-btn-wrap-1 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns_804eb2-f2 .kt-btn-wrap-1 .kt-button:focus{color:#ffffff;border-color:#444444;}.wp-block-kadence-advancedbtn.kt-btns_804eb2-f2 .kt-btn-wrap-1 .kt-button::before{display:none;}.wp-block-kadence-advancedbtn.kt-btns_804eb2-f2 .kt-btn-wrap-1 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns_804eb2-f2 .kt-btn-wrap-1 .kt-button:focus{background:#444444;}<\/style>\n<div class=\"wp-block-kadence-advancedbtn kt-btn-align-left kt-btn-tablet-align-inherit kt-btn-mobile-align-inherit kt-btns-wrap kt-btns_804eb2-f2\"><div class=\"kt-btn-wrap kt-btn-wrap-0\"><a class=\"kt-button button kt-btn-0-action kt-btn-size-standard kt-btn-style-basic kt-btn-svg-show-always kt-btn-has-text-true kt-btn-has-svg-false\" href=\"http:\/\/hazmat.free.fr\/5-mobilite\/tramenmea.html\"><span class=\"kt-btn-inner-text\">Activit&#xE9; 1<\/span><\/a><\/div><div class=\"kt-btn-wrap kt-btn-wrap-1\"><a class=\"kt-button button kt-btn-1-action kt-btn-size-standard kt-btn-style-basic kt-btn-svg-show-always kt-btn-has-text-true kt-btn-has-svg-false\" href=\"https:\/\/www.numworks.com\/fr\/professeurs\/activites-pedagogiques\/snt\/trame-gps\/\"><span class=\"kt-btn-inner-text\">Activit&#xE9; 2<\/span><\/a><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>1 &ndash; Pr&eacute;sentation Pour permettre &agrave; des p&eacute;riph&eacute;riques informatiques de &laquo; dialoguer &raquo; entre eux, en r&eacute;seau, il faut que les messages &eacute;chang&eacute;s respectent une syntaxe commune. On d&eacute;finit ce qu&rsquo;on appelle un protocole, c&rsquo;est &agrave; dire un ensemble de normes permettant &agrave; diff&eacute;rents p&eacute;riph&eacute;riques informatiques de dialoguer entre eux en r&eacute;seau.NMEA est &agrave; l&rsquo;origine&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"menu_order":0,"template":"","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"glossary-categories":[],"glossary-tags":[],"glossary-languages":[],"class_list":["post-1331","glossary","type-glossary","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>NMEA - Insyte.website<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/insyte.website\/WordPress\/glossary\/nmea\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NMEA - Insyte.website\" \/>\n<meta property=\"og:description\" content=\"1 &ndash; Pr&eacute;sentation Pour permettre &agrave; des p&eacute;riph&eacute;riques informatiques de &laquo; dialoguer &raquo; entre eux, en r&eacute;seau, il faut que les messages &eacute;chang&eacute;s respectent une syntaxe commune. 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