Добірка наукової літератури з теми "Indoor positionning"
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Дисертації з теми "Indoor positionning"
Tolza, Xavier. "Techniques embarquées de localisation indoor exploitant le protocole Bluetooth pour des objets connectés basse consommation." Thesis, Toulouse, INSA, 2020. http://www.theses.fr/2020ISAT0013.
Повний текст джерелаLocalization is an information used by many fields in both the civil and military sectors: war, exploration, aeronautical/naval/space navigation, construction, logistics, etc.Since the Second World War and the democratization of consumer radio equipment (telephones, GNSS receivers, etc.), localization by radio waves has gradually established itself as the standard method of localization in a large number of fields.From the last century until today, the capacities of localization systems have increased, thanks to the constant improvement of the computing power of integrated circuits and their miniaturization, making it possible to integrate localization functionalities in an increasing number mobile equipment. The measurement of radio signals and the calculations necessary for position estimation can now be performed on small on-board equipment.However, current solutions mostly use fixed and wired radio equipment to allow the location of mobile connected objects. However, it is preferable for many use cases that the entire system runs on batteries: temporary deployments, environments without a power network or too high installation costs. It is therefore necessary to assess and improve the energy autonomy of current location algorithms.Many connected objects are already in circulation, research around a location system compatible with those already existing equipment arouses great research interest. A large part of current connected objects using standardized protocols in the 2.4GHZ ISM band, numerous studies assess the relevance of those signals for indoor positioning. The Bluetooth standard is widely used and energy efficient, making it an attractive candidate for indoor location. The studies presenting a localization system using this protocol are numerous, but there is no conclusive comparison on the performances of the main existing algorithms using ultra low consumption equipment.The objective of this study is to study and develop a localization system applied to indoor localization, using the Bluetooth protocol and fully autonomous on battery. A comparison between the main existing techniques and algorithms (reception power (RSSI), arrival time (ToA) and angle of arrival (AoA)) will be carried out and energy autonomy will be assessed.First, the physical models of these three techniques are compared, and a parametric optimization to estimate a position from the raw measurements is presented. Different energy management strategies are presented and the methods used to carry out the measurements for location with low consumption are detailed.Finally, the energy performance of the system is evaluated, the overall autonomy is estimated and the position error distribution function is given for each of the three compared techniques
Amadou, Kountché Djibrilla. "Localisation dans les bâtiments des personnes handicapées et classification automatique de données par fourmis artificielles." Thesis, Tours, 2013. http://www.theses.fr/2013TOUR4021/document.
Повний текст джерелаThe concept of « smart » invades more and more our daily life. A typical example is the smartphone, which becames by years an essential device. Soon, it’s the city, the car and the home which will become « smart ». The intelligence is manifested by the ability for the environment to interact and to take decisons in its relationships with users and other environments. This needs information on state changes occurred on both sides. Sensor networks allow to collect these data, to apply on them some pre-processings and to transmit them. Sensor network, towards some of their caracteristics are closed to Swarm Intelligence in the sense that small entities with reduced capababilities can cooperate automatically, in unattended, decentralised and distributed manner in order to accomplish complex tasks. These bio-inspired methods have served as basis for the resolution of many problems, mostly optimization and this insipired us to apply them on problems met in Ambient Assisted Living and on the data clustering problem. AAL is a sub-field of context-aware services, and its goals are to facilitate the everyday life of elderly and disable people. These systems determine the context and then propose different kind of services. We have used two important elements of the context : the position and the disabilty. Although positioning has very good precision outdoor, it faces many challenges in indoor environments due to the electromagnetic wave propagation in harsh conditions, the cost of systems, interoperabilty, etc. Our works have been involved in positioning disabled people in indoor environment by using wireless sensor network for determining the caracteristics of the electromagnetic wave (signal strenght, time, angle) for estimating the position by geometric methods (triangulation, lateration), fingerprinting methods (k-nearest neighbours), baysiens filters (Kalman filter). The application is to offer AAL services like navigation. Therefore we extend the definition of sensor node to take into account any device, in the environment, capable of emiting and receiving a signal. Also, we have studied the possibility of using Pachycondylla Apicalis for data clustering and for indoor localization by casting this last problem as data clustering problem. Finally we have proposed a system based on a middleware architecture
Richard, Jérémy. "De la capture de trajectoires de visiteurs vers l’analyse interactive de comportement après enrichissement sémantique." Electronic Thesis or Diss., La Rochelle, 2023. http://www.theses.fr/2023LAROS012.
Повний текст джерелаThis thesis focuses on the behavioral study of tourist activity using a generic and interactive analysis approach. The developed analytical process concerns the tourist trajectory in the city and museums as the study field. Experiments were conducted to collect movement data in the tourist city using GPS signals, thus enabling the acquisition of a movement trajectory. However, the study primarily focuses on reconstructing a visitor’s trajectory in museums using indoor positioning equipment, i.e., in a constrained environment. Then, a generic multi-aspect semantic enrichment model is developed to supplement an individual’s trajectory using multiple context data such as the names of neighborhoods the individual passed through in the city, museum rooms, weather outside, and indoor mobile application data. The enriched trajectories, called semantic trajectories, are then analyzed using formal concept analysis and the GALACTIC platform, which enables the analysis of complex and heterogeneous data structures as a hierarchy of subgroups of individuals sharing common behaviors. Finally, attention is paid to the "ReducedContextCompletion" algorithm that allows for interactive navigation in a lattice of concepts, allowing the data analyst to focus on the aspects of the data they wish to explore
Тези доповідей конференцій з теми "Indoor positionning"
Zeaiter, Hussein, Francois Spies, Oumaya Baala, and Thierry Val. "Measuring accurate Angle of Arrival of weak LoRa signals for Indoor Positionning." In 2022 IEEE 12th International Conference on Indoor Positioning and Indoor Navigation (IPIN). IEEE, 2022. http://dx.doi.org/10.1109/ipin54987.2022.9918114.
Повний текст джерелаBelakbir, Abdelghani, Mustapha Amghar, and Nadia El Kouhen. "An indoor positionning system based on the fusion of location information." In 2012 Colloquium in Information Science and Technology (CIST). IEEE, 2012. http://dx.doi.org/10.1109/cist.2012.6388059.
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