A Novel Inter-device Calibration for Wi-Fi-aided Indoor Localization Systems
Wi-Fi-based indoor localization mechanisms have attracted many research efforts in recent years due to the widespread use of this technology. All robots in indoor scenarios use this technology to provide Internet connection for Cloud services in speech understanding or human-robot interaction. However, this technology can also be used to provide localization services based on the Received Signal Strength Indicator (RSSI). Nevertheless, the majority of the current proposed indoor localization systems spend huge amounts of time in order to set-up the system in the target environment. In addition, given that the IEEE 802.11 standards leave the RSSI computation up to the manufacturers, each device which needs to be located has to survey the wireless platform to correctly calibrate the localization system. To overcome these drawbacks, this paper presents a novel inter-device calibration procedure for new potential devices which makes use of a previous calibration carried out by a different device. The proposed calibration procedure enables an on-the-fly configuration of any new device with a negligible loss of localization accuracy.
KeywordsIndoor robot localization Wi-Fi based Inter-device calibration procedure
This work has been partially funded by the Spanish Ministry of Economy and Competitiveness under Grant number RTI2018-098156-B-C52, and by the Regional Council of Education, Culture and Sports of Castilla-La Mancha under grant number SBPLY/17/180501/000493, supported with FEDER funds. Miguel Martínez del Horno is also funded by the Universidad de Castilla-La Mancha grant 2016/14100.
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