Passive Real-Time Localization Through Wireless Sensor Networks

Localization and tracking play a key role in several applications both civilian and military [1]. The growing needs of remote monitoring private and public areas caused a fast development of wireless and pervasive systems. In such a framework, the availability of low‐power devices integrating on‐board processing and wireless communication stimulated several studies in efficient collaborative signal processing algorithms for tracking purposes. Most of them are based on the exploitation of data collected by dedicated sensor or they assume the target equipped with a transmitting device [2]. In this work, an innovative approach based on a LBE strategy to localize and track passive objects is presented. The localization problem is addressed only by considering the available received signal strength indicator (RSSI) at the nodes of a wireless sensor network (WSN) deployed in the environment and without any additional on board sensor.