Mutual shadowing effect of people tracked by the short-range UWB radar

Ultra wideband (UWB) radars belong to the most suitable technologies for short-range detection and tracking of multiple moving persons in critical situations and environments. The results of applications of a single UWB radar for such scenarios have shown that the target located nearby the radar antennas is very often visible only. The other targets can be also detected but with less reliability than that of the target located the most closely to the radar antennas. This is the crucial problem of UWB radar applications for short-range detection and tracking of multiple moving persons. In this paper, we will outline the origin of this effect as the impact of the mutual shadowing of targets within multiple person tracking scenario. This explanation will be verified by the experimental analyses.