Calibration-free WLAN location system based on dynamic mapping of signal strength

In this work we present a calibration-free system for locating wireless local area network devices, based on the radio frequency characteristics of such networks. Calibration procedures are applied in a great number of proposed location techniques and are considered to be not practical or a considerable barrier to wider adoption of such methods. Thus, we addressed issues related to some aspects of location systems through, an architecture based on wireless sniffers and by constructing a location model based on signal propagation models, in which its parameters are calculated in real time. This guarantee good self-sufficiency and adaptation capacity to the proposed system, once it does not need human intervention to work, neither from the network administrator or the wireless user being located. Moreover, a probabilistic method was used for estimating wireless devices positions, based on the previous constructed model. We later demonstrate the feasibility of our approach by reporting ...

• Type: Conference
• Year: 2006
• Where: MOBIWAC
• Authors: Luís Felipe M. de Moraes, Bruno Astuto A. Nunes
• Keywords: MOBIWAC 2006, Wireless, Wireless Local Area Network, Wireless Sniffers