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Wideband multi-source beamforming with adaptive array location calibration and direction finding

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3 Author(s)
Gazor, S. ; Dept. Signal, Ecole Nat. Superieure des Telecommun., Paris, France ; Affes, S. ; Grenier, Y.

We present a novel adaptive algorithm in the frequency domain with a low order of arithmetic complexity for simultaneously performing beamforming, source direction finding and array shape calibration. The algorithm is proposed for multiple wideband sources, but could be applied to the narrowband case or to a single wideband source. The source signals are first estimated using a set of beamformers. These estimates are processed with the observation signals to track the steering vectors within the signal subspace. The adapted steering vectors are projected over the array manifold, to finally estimate the source directions and sensor positions. Simulations show the efficiency of the algorithm to achieve the proposed tasks

Published in:

Acoustics, Speech, and Signal Processing, 1995. ICASSP-95., 1995 International Conference on  (Volume:3 )

Date of Conference:

9-12 May 1995

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