Post-Doc position at Université libre de Bruxelles (ULB)Compressive sensing for multi-antenna traffic radarDuration: 24 monthsToday most of the radars used to monitor road traffic are only capable of estimating the speed and distance of the vehicles moving in the direction of the receive antenna. This is performed by analyzing the response of the channel to multiple impulses successively transmitted on a set of equally spaced carrier frequencies. It has recently been proposed to make use of an antenna array at the receiver to further detect the signal direction of arrival. The signals received at the different antennas are constructively combined using a beamforming algorithm taking the direction of arrival into account. New radars are therefore capable of monitoring the vehicle targets in the distance/angle/speed space. Even if recently designed radars are shown to perform well, their resolution in the three dimensions is limited by the finite bandwidth used to scan the spectrum and by the limited number of antennas in the array. The aim of the project is to significantly increase the resolution of the radar by using the compressive sensing technology. It relies on the fact that only a small fraction of the distance/angle/speed cells are occupied by objects of interest in most radar scenes. Compressive sensing makes it possible to reconstruct a sparse signal from an underdetermined linear system of equations and to increase therefore significantly the radar resolution.Contact:Prof. Ph De Doncker (pdedonck@ulb.ac.be)Prof. Fr Horlin (fhorlin@ulb.ac.be)
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