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International Journal of Antennas and Propagation
Volume 2013, Article ID 602716, 9 pages
Research Article

Array-Based Ultrawideband through-Wall Radar: Prediction and Assessment of Real Radar Abilities

DEMR (Département d'Électromagnétisme et Radar), Onera (The French Aerospace Lab), 31055 Toulouse, France

Received 4 October 2012; Revised 6 December 2012; Accepted 17 December 2012

Academic Editor: Matteo Pastorino

Copyright © 2013 Nadia Maaref and Patrick Millot. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper deals with a new through-the-wall (TTW) radar demonstrator for the detection and the localisation of people in a room (in a noncooperative way) with the radar situated outside but in the vicinity of the first wall. After modelling the propagation through various walls and quantifying the backscattering by the human body, an analysis of the technical considerations which aims at defining the radar design is presented. Finally, an ultrawideband (UWB) frequency modulated continuous wave (FMCW) radar is proposed, designed, and implemented. Some representative trials show that this radar is able to localise and track moving people behind a wall in real time.