{"id":226826,"date":"2013-04-11T22:00:00","date_gmt":"2013-04-11T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/premiere-determination-dune-position-au-sol-au-moyen-des-satellites-galileo\/"},"modified":"2013-04-11T22:00:00","modified_gmt":"2013-04-11T22:00:00","slug":"premiere-determination-dune-position-au-sol-au-moyen-des-satellites-galileo","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/premiere-determination-dune-position-au-sol-au-moyen-des-satellites-galileo\/","title":{"rendered":"Premi\u00e8re d\u00e9termination d&rsquo;une position au sol au moyen des satellites Galileo"},"content":{"rendered":"<p>Le mois dernier, la premi&egrave;re d&eacute;termination de la longitude, de la latitude et de l&rsquo;altitude d&rsquo;un point a &eacute;t&eacute; r&eacute;alis&eacute;e au moyen des quatre satellites Galileo par le Laboratoire de navigation h&eacute;berg&eacute; par l&rsquo;ESTEC, le centre technique de l&rsquo;ESA situ&eacute; &agrave; Noordwijk (Pays-Bas), et par les laboratoires de d&eacute;veloppement logiciel GNSS (Global Navigation Satelite System) dont ST dispose &agrave; Naples (Italie). ST et l&rsquo;ESA ont men&eacute; ces essais statiques et dynamiques historiques au moyen d&rsquo;une antenne de toit avec une vue d&eacute;gag&eacute;e des satellites (essais statiques) et d&rsquo;une unit&eacute; d&rsquo;essais mobile se d&eacute;pla&ccedil;ant dans un environnement op&eacute;ratoire ordinaire (essais dynamiques). Le r&eacute;cepteur Teseo II a pu suivre et produire un positionnement 3D sur l&rsquo;ensemble de la trajectoire de l&rsquo;unit&eacute; mobile, en utilisant exclusivement les quatre satellites de validation en orbite (IOV) du syst&egrave;me Galileo.<\/p>\n<p>ST et l&rsquo;ESA pr&eacute;voient de poursuivre les essais conjointement en deux phases : initialement dans le cadre d&rsquo;un positionnement multi-constellations avec des satellites GPS et\/ou Glonass ; puis, dans le courant de l&rsquo;ann&eacute;e et lorsque davantage de satellites Galileo seront disponibles, en utilisant uniquement des satellites Galileo dans un environnement hostile. <\/p>\n<p>L&rsquo;Agence spatiale europ&eacute;enne et ST collaborent dans le cadre d&rsquo;un projet visant &agrave; &eacute;valuer les performances de r&eacute;cepteurs GNSS pour applications automobiles et grand public de faible co&ucirc;t utilisant les signaux de Galileo en combinant l&rsquo;expertise acquise par l&rsquo;ESA dans la connaissance des signaux, &agrave; la fois th&eacute;orique et issue de ses missions de surveillance, et l&rsquo;exp&eacute;rience accumul&eacute;e par ST depuis 20 ans dans la production de circuits int&eacute;gr&eacute;s destin&eacute;s au traitement des signaux de navigation. <\/p>\n<p>S&rsquo;ils se caract&eacute;risent par une bande passante plus &eacute;troite et des antennes moins performantes, les r&eacute;cepteurs de faible co&ucirc;t sont confront&eacute;s, en conditions op&eacute;rationnelles r&eacute;elles, &agrave; des environnements nettement plus hostiles que les r&eacute;cepteurs d&rsquo;essais professionnels. Dans la mesure o&ugrave; les r&eacute;cepteurs &agrave; usage grand public sont amen&eacute;s &agrave; fonctionner dans des environnements tels que les canyons urbains o&ugrave; un grand nombre de signaux sont en fait r&eacute;fl&eacute;chis, consid&eacute;rablement affaiblis et sensiblement distordus, le r&eacute;cepteur Teseo II de ST, gr&acirc;ce &agrave; ses fonctionnalit&eacute;s multi-constellations et sa sensibilit&eacute; hors du commun, repr&eacute;sente une solution id&eacute;ale pour de nombreuses applications de navigation destin&eacute;es au grand public.<\/p>\n<p>&quot; <em>Cet &eacute;v&eacute;nement historique r&eacute;alis&eacute; en collaboration avec l&rsquo;Agence spatiale europ&eacute;enne souligne de fa&ccedil;on magistrale les performances accomplies par les satellites Galileo gr&acirc;ce &agrave; la plate-forme de navigation de ST, et renforce notre position de premier fournisseur de r&eacute;cepteurs GNSS de haute performance pour des applications telles que le syst&egrave;me d&rsquo;appel d&rsquo;urgence eCall, les p&eacute;ages autoroutiers, la t&eacute;l&eacute;matique et la navigation<\/em> &quot;, a d&eacute;clar&eacute; Antonio Radaelli, directeur de l&rsquo;entit&eacute; Info-Divertissement de STMicroelectronics. &quot; <em>De plus, la capacit&eacute; hors pair des r&eacute;cepteurs Teseo II &agrave; exploiter des signaux envoy&eacute;s par diff&eacute;rents syst&egrave;mes de navigation par satellite permet aux consommateurs de b&eacute;n&eacute;ficier du syst&egrave;me de navigation Galileo avant que la constellation de satellites soit enti&egrave;rement constitu&eacute;e.<\/em> &quot;<\/p>\n<p><a target=\"_blank\" href=\"https:\/\/intranet.tim-europe.com\/owa\/redir.aspx?C=RIjQtnVvykqHWKLvGgtutZm-1bJLCtBIRinRDF3gES3xrvvhM9jdO0Dwr5pxIxWT0sFCy4JQ4qc.&amp;URL=http%3a%2f%2fwww.st.com%2f\" rel=\"noopener\">www.st.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>STMicroelectronics annonce que ses r\u00e9cepteurs de positionnement mono-circuit Teseo II ont accompli avec succ\u00e8s le tout premier essai de d\u00e9termination d&rsquo;une position au sol \u00e0 l&rsquo;aide de Galileo, le syst\u00e8me europ\u00e9en autonome de navigation. Cet essai a \u00e9t\u00e9 r\u00e9alis\u00e9 en collaboration avec l&rsquo;Agence spatiale europ\u00e9enne (ESA).<\/p>\n","protected":false},"author":22,"featured_media":226827,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[],"domains":[47],"ppma_author":[1149],"class_list":["post-226826","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Premi\u00e8re d\u00e9termination d&#039;une position au sol au moyen des sat...<\/title>\n<meta name=\"description\" content=\"STMicroelectronics annonce que ses r\u00e9cepteurs de positionnement mono-circuit Teseo II ont accompli avec succ\u00e8s le tout premier essai de d\u00e9termination...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/226826\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Premi\u00e8re d\u00e9termination d&#039;une position au sol au moyen des satellites Galileo\" \/>\n<meta property=\"og:description\" content=\"STMicroelectronics annonce que ses r\u00e9cepteurs de positionnement mono-circuit Teseo II ont accompli avec succ\u00e8s le tout premier essai de d\u00e9termination d&#039;une position au sol \u00e0 l&#039;aide de Galileo, le syst\u00e8me europ\u00e9en autonome de navigation. 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