{"id":2612,"date":"2019-12-17T13:23:01","date_gmt":"2019-12-17T12:23:01","guid":{"rendered":"https:\/\/guide-gnss.com\/?page_id=2612"},"modified":"2024-10-15T13:48:16","modified_gmt":"2024-10-15T11:48:16","slug":"record-replay-essais-gnss","status":"publish","type":"page","link":"https:\/\/guide-gnss.com\/fr\/record-replay-essais-gnss\/","title":{"rendered":"Record &#038; Replay"},"content":{"rendered":"<p>[et_pb_section fb_built=\u00a0\u00bb1&Prime; fullwidth=\u00a0\u00bbon\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; saved_tabs=\u00a0\u00bball\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_fullwidth_header title=\u00a0\u00bbEssais GNSS en Rejeu\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; title_font=\u00a0\u00bbMontserrat|700|||||||\u00a0\u00bb title_text_align=\u00a0\u00bbcenter\u00a0\u00bb title_font_size=\u00a0\u00bb32px\u00a0\u00bb title_letter_spacing=\u00a0\u00bb3px\u00a0\u00bb subhead_font=\u00a0\u00bbMontserrat|600|||||||\u00a0\u00bb subhead_text_align=\u00a0\u00bbcenter\u00a0\u00bb subhead_font_size=\u00a0\u00bb20px\u00a0\u00bb use_background_color_gradient=\u00a0\u00bbon\u00a0\u00bb background_color_gradient_stops=\u00a0\u00bb#375882 0%|#4370a0 100%\u00a0\u00bb background_color_gradient_start=\u00a0\u00bb#375882&Prime; background_color_gradient_end=\u00a0\u00bb#4370a0&Prime; background_image=\u00a0\u00bbhttps:\/\/guide-gnss.com\/wp-content\/uploads\/2021\/06\/guide-gnss-home-2021.png\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<h2 style=\"text-align: center; font-size: 20px;\">Techniques d&rsquo;Essais, appel\u00e9es Record and Replay, r\u00e9utilisant des signaux GNSS r\u00e9els<\/h2>\n<p>[\/et_pb_fullwidth_header][\/et_pb_section][et_pb_section fb_built=\u00a0\u00bb1&Prime; _builder_version=\u00a0\u00bb4.16&Prime; custom_padding=\u00a0\u00bb10px||5px|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.16&Prime; custom_padding=\u00a0\u00bb2px|||||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<h2>ESSAIS en REJEU, A quoi \u00e7a sert ?<\/h2>\n<p>Les essais GNSS en \u00ab\u00a0Record and Replay\u00a0\u00bb (ou \u00ab\u00a0Record and Playback\u00a0\u00bb) consistent \u00e0 rejouer sur un banc d\u2019essais des signaux GNSS et des mesures de capteurs pr\u00e9alablement enregistr\u00e9s lors de campagnes de collectes sur le terrain. Cette technique de m\u00e9trologie est capable de restituer fid\u00e8lement lors des rejeux tous les ph\u00e9nom\u00e8nes de propagation ayant alt\u00e9r\u00e9s le signal GNSS entre l&rsquo;antenne du satellite et celle du r\u00e9cepteur.<\/p>\n<p>Dans certains cas, les signaux GNSS rejou\u00e9s sont synth\u00e9tiques. Ils proviennent de g\u00e9n\u00e9rateurs de constellations.[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=\u00a0\u00bb1&Prime; _builder_version=\u00a0\u00bb4.16&Prime; custom_padding=\u00a0\u00bb9px||7px|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_row column_structure=\u00a0\u00bb1_2,1_2&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb1_2&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<h2>Pourquoi r\u00e9aliser des essais en Rejeu?<\/h2>\n<p>Les analyses obtenues avec cette m\u00e9thode de tests fournissent des <span style=\"color: #0073d1;\">r\u00e9sultats beaucoup plus pertinents<\/span> pour classer et s\u00e9lectionner des terminaux GNSS ou les \u00e9l\u00e9ments le composant, comme <span style=\"color: #0073d1;\">l\u2019antenne, le r\u00e9cepteur ou les capteurs \u00e0 hybrider<\/span>. De la m\u00eame mani\u00e8re, il devient facile de valider de <span style=\"color: #0073d1;\">nouveaux firmwares, de nouveaux algorithmes, des param\u00e9trages sp\u00e9cifiques<\/span> ou encore des <span style=\"color: #0073d1;\">service de donn\u00e9es<\/span> pour corriger ou augmenter les mesures de position.<\/p>\n<p>L\u2019op\u00e9rateur du banc d\u2019essais est ainsi en mesure de lancer des sessions de rejeux \u00e0 sa convenance. L\u2019impl\u00e9mentation d&rsquo;un banc d&rsquo;essais de rejeux est <span style=\"color: #0073d1;\">simple et rapide<\/span>. Il est accessible \u00e0 tous avec un minimum d\u2019initiation.<\/p>\n<p>Les essais sont r\u00e9alis\u00e9s en \u00e9cartant tous les risques susceptibles de compromettre une campagne d\u2019essais. L\u2019op\u00e9rateur est <span style=\"color: #0073d1;\">s\u00fbr d\u2019obtenir un r\u00e9sultat fiable<\/span> dans un environnement caract\u00e9ris\u00e9 et choisi.<\/p>\n<p>En r\u00e9duisant les temps consacr\u00e9s \u00e0 la planification, l\u2019installation et la mise en \u0153uvre de l\u2019instrumentation, les sessions de rejeux sont par essence beaucoup <span style=\"color: #0073d1;\">plus abordables financi\u00e8rement<\/span>.<\/p>\n<p>De m\u00eame, l\u2019instrumentation utilis\u00e9e pour r\u00e9aliser un banc d\u2019essai de rejeux mobilise des <span style=\"color: #0073d1;\">budgets beaucoup plus raisonnables<\/span> que ceux n\u00e9cessaires pour acqu\u00e9rir un g\u00e9n\u00e9rateur de constellation con\u00e7u autour d&rsquo;une architecture plus complexe.[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<h3><em>Synth\u00e8se :<\/em><\/h3>\n<ul>\n<li><em>Technique d&rsquo;essais tr\u00e8s&nbsp;abordable que ce soit pour acqu\u00e9rir l&rsquo;instrumentation ou r\u00e9aliser des essais ;<\/em><\/li>\n<li><em>Analyses plus avanc\u00e9es sur les R\u00e9cepteurs, les Antennes, les Setup, les Algorithmes, les Services de donn\u00e9es, les Hybridations;<\/em><\/li>\n<li><em>Mise en oeuvre Rapide, Facile et sans Risque ;<\/em><\/li>\n<li><em>Evaluations des applications.<\/em><\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_2&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/guide-gnss.com\/wp-content\/uploads\/2024\/10\/GNSS-RR-Record-Replay-Empalot-Stop-1024&#215;636-2.jpg\u00a0\u00bb _builder_version=\u00a0\u00bb4.21.0&Prime; hover_enabled=\u00a0\u00bb0&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb alt=\u00a0\u00bbMultitrajets GNSS utilisant la technique de rejeu\u00a0\u00bb title_text=\u00a0\u00bbMultitrajets GNSS utilisant la technique de rejeu\u00a0\u00bb sticky_enabled=\u00a0\u00bb0&Prime;][\/et_pb_image][et_pb_text _builder_version=\u00a0\u00bb4.21.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_font_size=\u00a0\u00bb10px\u00a0\u00bb hover_enabled=\u00a0\u00bb0&Prime; sticky_enabled=\u00a0\u00bb0&Prime;]<\/p>\n<p style=\"text-align: center;\"><em>Figure 1 \u2013 Mesures GNSS multitrajets utilisant la technique de rejeu<\/em><\/p>\n<p>[\/et_pb_text][et_pb_image src=\u00a0\u00bbhttps:\/\/guide-gnss.com\/wp-content\/uploads\/2019\/11\/GNSS-RR-Record-Replay-old-downtown.png\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; hover_enabled=\u00a0\u00bb0&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb sticky_enabled=\u00a0\u00bb0&Prime;][\/et_pb_image][et_pb_text _builder_version=\u00a0\u00bb4.21.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_font_size=\u00a0\u00bb10px\u00a0\u00bb hover_enabled=\u00a0\u00bb0&Prime; sticky_enabled=\u00a0\u00bb0&Prime;]<\/p>\n<p style=\"text-align: center;\"><em>Figure 2 \u2013 Mesures de diffraction GNSS utilisant la technique de rejeu<\/em><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=\u00a0\u00bb1&Prime; _builder_version=\u00a0\u00bb4.16&Prime; custom_padding=\u00a0\u00bb9px||8px|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_row column_structure=\u00a0\u00bb1_2,1_2&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb1_2&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<h2>Quelles sont les sp\u00e9cificit\u00e9s des Essais en Rejeu?<\/h2>\n<p>La technique du rejeu offre de nombreux avantages qui lui sont propres. Elle emprunte \u00e0 la fois les avantages des essais sur site et sur des simulateurs, mais sans en supporter les inconv\u00e9nients.<\/p>\n<p>Les essais sont r\u00e9alis\u00e9s avec des <span style=\"color: #0073d1;\">signaux GNSS \u00ab&nbsp;repr\u00e9sentatifs&nbsp;\u00bb <\/span>des signaux originaux issus du monde r\u00e9el pour disposer de <span style=\"color: #0073d1;\">mesures r\u00e9alistes, fiables et surtout interpr\u00e9tables<\/span>. A dessein, les signaux GNSS sont num\u00e9ris\u00e9s pour \u00eatre rejou\u00e9s \u00e0 la demande et \u00e0 volont\u00e9. Les op\u00e9rations sont \u00ab&nbsp;reproductibles&nbsp;\u00bb afin de comparer les mesures de positions de plusieurs dispositifs mis sous test.<\/p>\n<p>En r\u00e9it\u00e9rant des s\u00e9ances de rejeux, les <span style=\"color: #0073d1;\">erreurs \u00ab&nbsp;al\u00e9atoires&nbsp;\u00bb<\/span> se d\u00e9gagent des erreurs dites <span style=\"color: #0073d1;\">\u00ab&nbsp;syst\u00e9matiques&nbsp;\u00bb<\/span>.<\/p>\n<p>Les premi\u00e8res sont provoqu\u00e9es par une propagation d\u00e9sordonn\u00e9e des signaux GNSS et les secondes proviennent de biais cons\u00e9cutifs \u00e0 des multi-trajets ayant allong\u00e9s leurs canaux de propagations.<\/p>\n<p>L\u2019\u00e9tude stochastique des erreurs fournit de pr\u00e9cieuses informations sur la capacit\u00e9 d\u2019un r\u00e9cepteur \u00e0 maintenir des positons<span style=\"color: #0073d1;\"> \u00ab&nbsp;Justes&nbsp;\u00bb et \u00ab&nbsp;Fid\u00e8les&nbsp;\u00bb<\/span> :<\/p>\n<ul>\n<li>Au cours de la <span style=\"color: #0073d1;\">phase de \u00ab&nbsp;R\u00e9silience&nbsp;\u00bb<\/span>, les signaux sont alt\u00e9r\u00e9s et les mesures de position auront une propension \u00e0 diverger. Les erreurs maximales sont \u00e0 \u00e9tablir.<\/li>\n<li>Quant \u00e0 la <span style=\"color: #0073d1;\">phase de \u00ab&nbsp;R\u00e9manence&nbsp;\u00bb<\/span>, l\u00e0 o\u00f9 le r\u00e9cepteur b\u00e9n\u00e9ficie de nouveau de signaux int\u00e8gres, les erreurs vont encore persister un moment. La rapidit\u00e9 de reconverge du terminal constitue un crit\u00e8re essentiel de performance souvent sous-estim\u00e9.<\/li>\n<\/ul>\n<p>[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<h3><em>Synth\u00e8se :<\/em><\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><em>Donn\u00e9es :&nbsp; Repr\u00e9sentativit\u00e9 &amp; Reproductibilit\u00e9 &amp; R\u00e9p\u00e9tabilit\u00e9<\/em><\/li>\n<li><em>Sc\u00e9narios : R\u00e9f\u00e9rence de comparaison, Donn\u00e9es valid\u00e9es, Fid\u00e8le et R\u00e9aliste<\/em><\/li>\n<li><em>Mesures : Justesse &amp; Fid\u00e9lit\u00e9<\/em><\/li>\n<li><em>Erreurs : R\u00e9silience &amp; R\u00e9manence<\/em><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_2&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/guide-gnss.com\/wp-content\/uploads\/2019\/11\/GNSS-RR-Record-Replay-ponts-jumeaux.jpg\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00a0\u00bb4.21.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_font_size=\u00a0\u00bb10px\u00a0\u00bb hover_enabled=\u00a0\u00bb0&Prime; sticky_enabled=\u00a0\u00bb0&Prime;]<\/p>\n<p style=\"text-align: center;\"><em>Figure 3 \u2013 Mesures de dispersion GNSS sous un pont par la technique de rejeu<\/em><\/p>\n<p>[\/et_pb_text][et_pb_image src=\u00a0\u00bbhttps:\/\/guide-gnss.com\/wp-content\/uploads\/2019\/11\/GNSS-RR-Record-Replay-Boulevard.png\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00a0\u00bb4.21.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_font_size=\u00a0\u00bb10px\u00a0\u00bb hover_enabled=\u00a0\u00bb0&Prime; sticky_enabled=\u00a0\u00bb0&Prime;]<\/p>\n<p style=\"text-align: center;\"><em>Figure 4 \u2013 Mesures de trajets multiples et de diffraction GNSS utilisant la technique de rejeu<\/em><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=\u00a0\u00bb1&Prime; _builder_version=\u00a0\u00bb4.16&Prime; custom_padding=\u00a0\u00bb6px||8px|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_row column_structure=\u00a0\u00bb1_2,1_2&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb1_2&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<h2>Qu&rsquo;est ce qu&rsquo;un Sc\u00e9nario de Rejeu?<\/h2>\n<p>La technique du rejeu restitue sur un banc d\u2019essais des signaux GNSS num\u00e9ris\u00e9s aussi bien dans des environnements r\u00e9els que synth\u00e9tiques. Ils peuvent \u00eatre m\u00e9lang\u00e9s avec des interf\u00e9rents g\u00e9n\u00e9r\u00e9s sur un second instrument, comme ils peuvent \u00eatre fournis d\u00e9j\u00e0 brouill\u00e9s pour d\u00e9terminer les capacit\u00e9s de r\u00e9silience d\u2019un r\u00e9cepteur.<\/p>\n<p>Les sc\u00e9narios sont constitu\u00e9s au minimum des <span style=\"color: #0073d1;\">signaux GNSS num\u00e9ris\u00e9s, de la trajectoire de r\u00e9f\u00e9rence et d\u2019une vid\u00e9o contextuelle<\/span>. N\u00e9anmoins, il est int\u00e9ressant d\u2019y trouver les mesures <span style=\"color: #0073d1;\">inertielles, odom\u00e9triques, messages d\u2019assistance (A-GNSS, RTK, PPP,\u2026), LiDAR<\/span> et dans certains cas de mesures de positions de r\u00e9cepteurs pour r\u00e9aliser les premi\u00e8res comparaisons.<\/p>\n<p>Les sc\u00e9narios peuvent <span style=\"color: #0073d1;\">couvrir des sc\u00e8nes types<\/span> de milieux ruraux, p\u00e9ri-urbains, urbains, autoroutiers, montagneux,\u2026 En plus, cette m\u00e9thodologie de tests ouvre de nouvelles opportunit\u00e9s pour <span style=\"color: #0073d1;\">\u00e9tudier, avec finesse, le comportement de terminaux<\/span> soumis \u00e0 des sources d\u2019erreurs bien identifi\u00e9es, comme des ponts, des routes sous des canop\u00e9es, des avenues bord\u00e9es d\u2019immeubles plus ou moins hauts,\u2026<\/p>\n<p>Les analyses conventionnelles sont enrichies de jeux de mesures obtenues \u00e0 la suite de plusieurs it\u00e9rations. Les r\u00e9sultats aboutissent \u00e0 des rapports de caract\u00e9risation suffisamment pr\u00e9cis pour <span style=\"color: #0073d1;\">s\u00e9lectionner un terminal parmi d&rsquo;autres en fonction des profils de missions<\/span> d\u00e9finis.\u00a0 Pour un m\u00eame terminal, il devient possible de <span style=\"color: #0073d1;\">comparer toutes les options et les cas d&rsquo;\u00e9quipement<\/span> envisag\u00e9s : Antennes, Augmentations\/Corrections, Hybridations, Param\u00e9trages Permanents ou Contextuels,\u2026<\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<h3><em>Synth\u00e8se :<\/em><\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><em>Circulation d\u2019un v\u00e9hicule d\u2019essai de d\u00e9finition avec les solutions sous test (DUT) ;<\/em><\/li>\n<li><em>S\u00e9lection et caract\u00e9risation des environnements d\u2019essais ;<\/em><\/li>\n<li><em>Instrumentalisation du v\u00e9hicule pour disposer d\u2019une r\u00e9f\u00e9rence, d\u2019une num\u00e9risation et des moyens de contr\u00f4le ;<\/em><\/li>\n<li><em>Analyse des erreurs sur les mesures de position.<\/em><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_2&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/guide-gnss.com\/wp-content\/uploads\/2019\/11\/GNSS-RR-Record-Replay-CN0.jpg\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00a0\u00bb4.21.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_font_size=\u00a0\u00bb10px\u00a0\u00bb hover_enabled=\u00a0\u00bb0&Prime; sticky_enabled=\u00a0\u00bb0&Prime;]<\/p>\n<p style=\"text-align: center;\"><em>Figure 5 \u2013 Variation des signaux GNSS avec le technique de rejeu (record and replay)<\/em><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=\u00a0\u00bb1&Prime; _builder_version=\u00a0\u00bb4.16&Prime; background_color=\u00a0\u00bb#375882&Prime; custom_padding=\u00a0\u00bb5px||8px|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_row column_structure=\u00a0\u00bb1_2,1_6,1_6,1_6&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb1_2&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<span style=\"color: #ffffff;\"><strong>D\u00e9couvrez \u00e9galement nos autres services autour de la m\u00e9trologie GNSS \/ GPS<\/strong><\/span>[\/et_pb_text][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_6&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_button button_url=\u00a0\u00bbhttps:\/\/guide-gnss.com\/fr\/methodologies-dessais\/\u00a0\u00bb button_text=\u00a0\u00bbM\u00e9thodologie des Essais GNSS\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; custom_button=\u00a0\u00bbon\u00a0\u00bb button_text_color=\u00a0\u00bb#253b82&Prime; button_bg_color=\u00a0\u00bb#ffffff\u00a0\u00bb button_icon=\u00a0\u00bb&#x39;||divi||400&Prime; button_on_hover=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_button][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_6&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_button button_url=\u00a0\u00bbhttps:\/\/guide-gnss.com\/fr\/essais\/\u00a0\u00bb button_text=\u00a0\u00bbEssais GNSS in situ (Live)\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; custom_button=\u00a0\u00bbon\u00a0\u00bb button_text_color=\u00a0\u00bb#253b82&Prime; button_bg_color=\u00a0\u00bb#ffffff\u00a0\u00bb button_icon=\u00a0\u00bb&#x39;||divi||400&Prime; button_on_hover=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_button][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_6&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_button button_url=\u00a0\u00bbhttps:\/\/guide-gnss.com\/fr\/simulateur-de-constellations\/\u00a0\u00bb button_text=\u00a0\u00bbEssais GNSS en simulation\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; custom_button=\u00a0\u00bbon\u00a0\u00bb button_text_color=\u00a0\u00bb#253b82&Prime; button_bg_color=\u00a0\u00bb#ffffff\u00a0\u00bb button_icon=\u00a0\u00bb&#x39;||divi||400&Prime; button_on_hover=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_button][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Techniques d&rsquo;Essais, appel\u00e9es Record and Replay, r\u00e9utilisant des signaux GNSS r\u00e9elsESSAIS en REJEU, A quoi \u00e7a sert ? Les essais GNSS en \u00ab\u00a0Record and Replay\u00a0\u00bb (ou \u00ab\u00a0Record and Playback\u00a0\u00bb) consistent \u00e0 rejouer sur un banc d\u2019essais des signaux GNSS et des mesures de capteurs pr\u00e9alablement enregistr\u00e9s lors de campagnes de collectes sur le terrain. Cette [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":8628,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.11 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Record &amp; Replay - GUIDE GNSS<\/title>\n<meta name=\"description\" content=\"Record &amp; Replay, est une solution de test o\u00f9 les signaux GNSS sont rejou\u00e9s pour assurer des mesures r\u00e9alistes, fiables et interpr\u00e9tables.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/guide-gnss.com\/fr\/record-replay-essais-gnss\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Record &amp; Replay - 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