Passive real-time localization through wireless sensor networks

The rapid progress of wireless communication and embedded systems has made wireless sensor networks a valuable backbone for numerous applications, mainly with monitoring purposes. In this field, the need for location aware systems has growth rapidly in the last few years. Most research efforts have been done in node localization but less attention has been paid on the localization and tracking of passive (that do not belong to the network infrastructure) objects. In this paper, the problem of passive object localization is dealt with an innovative methodology based on support vector machine exploiting the received signal strength indicator measured by the nodes. Some preliminary results chosen from the assessment of the proposed approach are presented.