Publication: Estudio de la localización mediante centros geométricos de ubicaciones de estaciones base
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2013-10-23
Defense date
2013-10-31
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Abstract
Actualmente, los teléfonos inteligentes son los claros dominadores del
mercado. Impulsados principalmente por sus mercados de aplicaciones
que permiten a terceros ofrecer sus productos de una manera sencilla.
Entre estas aplicaciones, están especialmente en auge, aquellas basadas en
la localización y posicionamiento del usuario (Location Based Services, LBS).
En este proyecto, se pretende realizar un estudio de las distintas técnicas
de posicionamiento disponibles para dispositivos móviles, e introducir nuevos
métodos basados en el cálculo de centros geométricos utilizando las ubicaciones
de las distintas estaciones base recibidas por el teléfono móvil. También
se comprobará la importancia de que dicha ubicación sea exacta, obtenida
del portal Infoantenas, o aproximada, obtenida de Google Maps Mobile.
El proyecto cuenta con una primera fase en la que se ha desarrollado
una aplicación Android capaz de tomar los datos necesarios para el estudio.
Después, se han recopilado medidas en distintos lugares para tener una idea
general del funcionamiento de los sistemas. Y por último se han procesado
los datos y se han analizado los resultados obtenidos.
En dichos resultados se puede observar cómo la exactitud de algoritmos diseñados se asemeja a la de Google Maps Mobile sin Wi-Fi en entornos urbanos,
y como la mejoran sustancialmente en entornos rurales, aunque siempre
lejos de la del GPS. Se concluye también que el uso de la posición exacta
mejora los resultados en zonas rurales, pero no así en zonas urbanas.
Nowadays, smartphones are clearly dominant on the market. Mainly boosted by their application markets, that allow third parties to offer their products in a simple way. Among these applications, are especially on the rise those ones based in the location and positioning of the user (Location based services). In this project, the goal is to study di erent position techniques for mobile phones, and to introduce new methods based on the calculation of geometric centres using the position of the base transceiver stations (BTS) received by a mobile device in a specific point. It will also be checked how important it is that the position of these stations is exact, given by the web portal Infoantenas, or an approximation, given by Google Maps Mobile. The project is divided into different phases, being the first one the development of an Android application which retrieves all the necessary data for the subsequent study. In the second phase, measurements are taken in several places to have a general idea of the different systems behaviour. And, finally, all the data is processed and the obtained results are analyzed. These results have shown how the accuracy of the algorithms designed in this project is similar to the one obtained using Google Maps Mobile cell-based system without Wi-Fi in urban environments, and much better in countryside areas, but always much worse than the one obtained with GPS. It is also proved that using the exact position of the BTS improves the results in countryside areas but not in urban environments.
Nowadays, smartphones are clearly dominant on the market. Mainly boosted by their application markets, that allow third parties to offer their products in a simple way. Among these applications, are especially on the rise those ones based in the location and positioning of the user (Location based services). In this project, the goal is to study di erent position techniques for mobile phones, and to introduce new methods based on the calculation of geometric centres using the position of the base transceiver stations (BTS) received by a mobile device in a specific point. It will also be checked how important it is that the position of these stations is exact, given by the web portal Infoantenas, or an approximation, given by Google Maps Mobile. The project is divided into different phases, being the first one the development of an Android application which retrieves all the necessary data for the subsequent study. In the second phase, measurements are taken in several places to have a general idea of the different systems behaviour. And, finally, all the data is processed and the obtained results are analyzed. These results have shown how the accuracy of the algorithms designed in this project is similar to the one obtained using Google Maps Mobile cell-based system without Wi-Fi in urban environments, and much better in countryside areas, but always much worse than the one obtained with GPS. It is also proved that using the exact position of the BTS improves the results in countryside areas but not in urban environments.
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Teléfonos inteligentes, Sistema de posicionamiento global, Android (Sistema operativo), Dispositivos móviles, Google Maps Mobile