L. Sakkila1*, C. Tatkeu2, A. Rivenq1, Y. El Hillali1, J-M. Rouvaen1
1 Université Lille Nord de France, F-59000 Lille, IEMN/DOAE, BP 311 le Mont-Houy, Valenciennes, France
2 Université Lille Nord de France, F-59000 Lille, IFSTTAR, LEOST, F-59650 Villeneuve d’Ascq
* Corresponding author. E-mail: firstname.lastname@example.org
Received: 18 March 2012; revised version accepted: 22 July 2012
In this paper, a short range radar system based on UWB -Ultra-Wide-Band- technology for road safety application is presented. During a long time, the radar and its applications were reserved to national defence, air security domains or weather services. Since a few years, with the emergence of new technologies, the radar applications are being extended to many sectors of daily life. UWB -Ultra Wide Band- is a new radio technique based on the emission of very short non-sinusoidal pulses duration, that have, typically, widths less than 1.5 ns, so that the spectrum of the emitted signals may spread over several Gigahertz . All exiting studies on UWB radar concerns essentially medical and military applications  and only some studies were interested in UWB radar, for the obstacles detection, such as mines detection, detection of the heart wall movements by medical imagery or the monitoring through the walls for military operations .
In this paper, we propose to exploit the UWB technology for road radar application, in order to profit from its inherent advantages such as good range resolution, low power consumption, low price etc. The radar system proposed, offers a resolution in distance of about 15 cm for a pulse width of 1 ns, making this system very interesting in several short range applications. The originality of this radar is its capacity to detect easily, various obstacles. So, this paper describes the proposed radar and presents an interesting study of the adapted UWB waveforms that allow detection of different kind of obstacles in short ranges with a good resolution.
Keywords: Road safety; Radar; Ultra Wide Band; Waveform; Obstacle.