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Study of Localisation Techniques for Dense 802.11 Avionic Networks

出版	Universitat Politècnica de Catalunya. Escola Tècnica Superior d'Enginyeria de Telecomunicació de Barcelona. Departament de Teoria del Senyal i Comunicacions, 2015 (Enginyeria de Telecomunicació), 2015
URL	http://books.google.com.hk/books?id=KCwpywEACAAJ&hl=&source=gbs_api

註釋Localization techniques in indoor environments have become an important field of study due to the tremendous growth of wireless local area networks (WLANs), and that growth is being possible through the Standard IEEE 802.11. The aim of the project is to study the different localisation algorithms used in wireless technology. Knowledge of the physical location of one device can be useful in various ways (e.g. network configuration, network maintenance). In order to locate the target unit, the method studied relies on the double differentiation of four parameters, referred to a set of nodes, and called arrival times. This basic principle characterises the Differential Time-Difference of Arrival (DTDoA) techniques. In this Master Thesis, and for the "in cabin" location purpose, a simulator has been created, representing the aircraft seat map with the different Screen Units (SU). Different algorithms have been used, on top of DTDoA, to estimate the physical location of the SU, taking into account that the most important aspect in this kind of environment is the accuracy.