Estimation de la direction d'arrivée d'échos sonores à large bande noyés dans le signal direct

Authors: Guérard, Marc-André
Advisor: Grenier, Dominique
Abstract: This memoir presents two algorithms which goal is to determine the direction of arrival of wideband acoustic sources. The first algorithm, called Source Elimination Method, eliminate the contribution of every source from the covariance matrix to improve the estimation of the direction of arrival estimate of echoes in a low echo-to-noise ratio. The second algorithm, called Multiple Signal Classification with Phase Focalisation, uses the information contained in the phase of every frequency to find the direction of arrival of wideband sources. The combination of the two algorithm permits to find the direction of arrival of two echoes, which power is - 17 dB compared to the main source, up to an echo to noise ratio of -15 dB. Experimental results confirming the precision of these algorithm are presented.
Document Type: Mémoire de maîtrise
Issue Date: 2016
Open Access Date: 24 April 2018
Grantor: Université Laval
Collection:Thèses et mémoires

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