TOACOM: A new cooperative method of target localization by UWB radar systems

During the last decade, detection, localization and tracking of moving persons by using UWB radars have attracted attention of researchers and final users as well. The problem of UWB sensors usage for these applications consists in the fact, that a single sensor is not very often able to localize a target situated in complex environment with the required reliability and accuracy. Therefore, UWB sensor network has been proposed for such applications. In this paper, we are going to deal with the through-the-wall localization of a moving person by using the small sensor network consisting of two UWB radar systems. For that scenario, we have introduced a new method of the cooperative localization referred to as the time of arrival completing method (TOACOM). The performance properties of this method have been analyzed and compared in a real single target through-the-wall scenario with the direct calculation method based on a single radar application and with the method of joining intersections of the ellipses. The obtained results indicate the superior performance of TOACOM as compared with the mentioned alternative methods.