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AN EVALUATION OF RSSI BASED INDOOR LOCALIZATION SYSTEMS IN WIRELESS SENSOR NETWORKS

This paper focuses on the analysis and comparison of existing indoor localization methods using wireless sensor networks (WSNs). The analysis lays emphasis on description of the most known localization techniques and investigation of their use in a WSN. Moreover, two RF-based location estimation methods using hyperbolic triangulation technique with RSSI information are proposed and compared to a third method using RF-based ambient mapping with artificial neural networks (ANNs). These methods are implemented and an experiment is conducted to investigate the advantages and drawbacks of each method. Keywords— Localization, Location estimation, Wireless sensor networks, RSSI, ZigBee.