?is paper deals with a new through-the-wall (TTW) radar demonstrator for the detection and the localisation of people in a\r\nroom (in a noncooperative way) with the radar situated outside but in the vicinity of the ??rst wall. A?er modelling the propagation\r\nthrough various walls and quantifying the backscattering by the human body, an analysis of the technical considerations which\r\naims at de??ning the radar design is presented. ??inally, an ultrawideband (UWB) frequency modulated continuous wave (??MCW)\r\nradar is proposed, designed, and implemented. Some representative trials show that this radar is able to localise and track moving\r\npeople behind a wall in real time.
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