Localization of moving targets with a passive radar system based on WiFi transmissions

The possibility of localize moving targets by exploiting a passive radar system based on WiFi transmissions is investigated in this paper. Specifically, the exploitation of multiple passive sensors is considered which allows to collect a set of range/Doppler/angle measures for a given target when observed at different bistatic geometries. Different target localization strategies are investigated based on proper subsets of the available measures. Moreover, it is demonstrated that the exploitation of the accuracy of the measures allows to improve the target localization performance. Experimental results are shown which have been obtained by means of a passive radar prototype developed and fielded at the DIET Dept. - University of Rome “La Sapienza”. This will contribute to demonstrate the fruitful application of the passive radar concept for short range surveillance.