Code secret: 589152<\/em><\/p>\n\n\n\nMembres du jury :<\/strong><\/p>\n\n\n\nM. Nel SAMAMA<\/strong>, Professeur, T\u00e9l\u00e9com SudParis, FRANCE – Directeur de these
M. Laurent MOREL<\/strong>, Professeur des universit\u00e9s, CNAM ESGT, FRANCE – Rapporteur
M. Bertrand MERMINOD<\/strong>, Professeur, EPFL, SUISSE – Rapporteur
Mme Juliette MARAIS <\/strong>, Directeur de recherche, Universit\u00e9 Gustave Eiffel, FRANCE – Examinateur
M. Alexandre VERVISCH-PICOIS<\/strong>, Ma\u00eetre de conf\u00e9rences, Telecom SudParis, FRANCE – Co-encadrant de these<\/p>\n\n\n\n\u00ab Algorithmes d\u2019hybridation pour du positionnement pr\u00e9cis GNSS \u00bb<\/h2>\n\n\n\npr\u00e9sent\u00e9 par Madame Delphine ISAMBERT<\/h2>\n\n\n\n
R\u00e9sum\u00e9 :<\/strong><\/p>\n\n\n\nLe positionnement pr\u00e9cis vient prendre une grande place dans la nouvelle dynamique de la smart city avec par exemple : la voiture autonome, les drones, les robots connect\u00e9s utilis\u00e9s dans l\u2019agriculture ou encore dans le monde industriel. La principale m\u00e9thode utilis\u00e9e est le positionnement GNSS (Global Navigation Satellite Systems) qui utilise des donn\u00e9es issues des satellites. Aujourd\u2019hui, les trois principales techniques sont le RTK (Real Time Kinematic), le PPP (Precise Point Positioning) et le PPP-RTK une hybridation des deux pr\u00e9c\u00e9dentes. La th\u00e8se s\u2019inscrit dans cet \u00e9cosyst\u00e8me et a pour principal objectif l\u2019hybridation de techniques existantes pour une meilleure adaptation au march\u00e9 industriel. Dans un premier temps, nous avons dress\u00e9 un \u00e9tat de l\u2019art sur le positionnement GNSS et \u00e9tudier selon diff\u00e9rents crit\u00e8res de performances comme la pr\u00e9cision et le temps de convergence, les trois principales techniques existantes. Suite \u00e0 cela, l\u2019\u00e9tude d\u2019une nouvelle hybridation a \u00e9t\u00e9 mis en \u0153uvre PPP-NRTK. En effet, nous avons hybrider deux techniques existantes : PPP-RTK et NRTK (Network RTK). Ainsi, nous voulions garder une position pr\u00e9cise en continu m\u00eame avec une m\u00e9thode de calcul globale comme le PPP ou le PPP-RTK et avec une initialisation du calcul pr\u00e9cise et rapide en NRTK. La derni\u00e8re partie de la th\u00e8se a \u00e9t\u00e9 consacr\u00e9 \u00e0 sa mise en \u0153uvre pratique et une analyse de ses diff\u00e9rents crit\u00e8res de performances comme le temps de convergence et la pr\u00e9cision, en vue de la comparer avec les techniques d\u00e9j\u00e0 existantes \u00e9tudi\u00e9es dans l\u2019\u00e9tat de l\u2019art.
Abstract :<\/strong><\/p>\n\n\n\nPrecise positioning is playing a major role in the new dynamics of the smart city, with autonomous cars, drones and connected robots used in agriculture and industry. The main method used is GNSS (Global Navigation Satellite Systems) positioning, which uses data from satellites. Today, the three main techniques are RTK (Real Time Kinematic), PPP (Precise Point Positioning) and PPP-RTK, a hybridization of the previous two. The main aim of this thesis is to hybridize existing techniques for better adaptation to the industrial market. As a first step, we reviewed the state of the art in GNSS positioning and studied the three main existing techniques in terms of performance such as accuracy and convergence time. This was followed by a study of a new hybridization approach. Indeed, we hybridized two existing techniques: PPP-RTK and NRTK (Network RTK) In this way, we wanted to maintain a continuously accurate position even with a global calculation method such as PPP or PPP-RTK, and with a precise and fast calculation initialization in NRTK. The last part of the thesis was devoted to its practical implementation and an analysis of its various performance criteria such as convergence time and accuracy, with a view to comparing it with the existing techniques studied in the state of the art.<\/p>\n","protected":false},"excerpt":{"rendered":"
L’Ecole doctorale : Ecole Doctorale de l’Institut Polytechnique de Paris et le Laboratoire de recherche SAMOVAR – Services r\u00e9partis, Architectures, Mod\u00e9lisation, Validation, Administration des R\u00e9seaux pr\u00e9sentent l\u2019AVIS DE SOUTENANCE de Madame Delphine ISAMBERT Autoris\u00e9e \u00e0 pr\u00e9senter ses travaux en vue de l\u2019obtention du Doctorat de l’Institut Polytechnique de Paris, pr\u00e9par\u00e9 \u00e0 T\u00e9l\u00e9com SudParis en : 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