Moving Person Tracking by UWB Radar System in Complex Environment

Ultra-wideband radar system allows detect, localize and track moving persons in critical situations and environments. Therefore, the issue of the short-range ultra-wideband radars dedicated to the support of the emergency event solving is really up-to-date. The publications devoted to the mention problem in last decade have dealt with the basic methods of ultra-wideband radar signal processing intent mostly on detection, localization and tracking of moving persons under simple scenarios. In this paper, we will deal with detection, localization and tracking of persons moving through an area where strong and large reflectors of electromagnetic waves are situated. We will show that this complex environment leads to so-called defective localization of target when the number of the targets and the target positions are wrongly estimated. In this paper, we will explain the origin of this effect and propose a new extended method of background subtraction capable to suppress markedly the impact of the mentioned reflectors on reliability and accuracy of a standard procedure of radar signal processing applied for detection, localization, and tracking of moving persons.