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Titre: Broadband Beamforming using Nested Arrays and Filterbanks
Conférencier: Pan Agathoklis , University of Victoria, BC, Canada
Lieu: Concordia University, room EV 3.309, 1515 Ste-Catherine O. ,
Date et heure: lundi le 30 janvier 2017 de 14:00 à 15:30

Résumé: Broadband beamforming has many applications in various areas such as radar, sonar, communication systems, speech processing and radio astronomy. A broadband beamformer is presented based on using nested arrays, multi-rate techniques and multi-dimensional filters. The use of appropriate subsampling in space and time for each nested subarray leads to signals with the same region of support (ROS) in the 2D frequency domain for all subarrays. This ROS will be shown to be the top octave of the signal bandwidth and can be used to achieve high selectivity at high as well as low frequencies. Examples of the beampatterns obtained using the proposed approach for linear and planar arrays will be shown and possible applications will be discussed.

Note biographique: Pan Agathoklis received the Dipl. Ing. degree in Electrical Engineering and the Dr. Sc. Techn. degree from the Swiss Federal Institute of Technology, Zurich, Switzerland. Since 1983, he has been with the Department of Electrical and Computer Engineering, University of Victoria, B.C., Canada, where he is currently a Professor. His fields of interest are in control, multidimensional digital signal processing and their applications.

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