Robust beamforming using sensors with nonidentical directivity patterns
Levin D, Habets E, Gannot S (2013)
Publication Status: Published
Publication Type: Conference contribution, Conference Contribution
Publication year: 2013
City/Town: Vancouver, Canada
Pages Range: 91-95
Article Number: 6637615
Conference Proceedings Title: Proc. IEEE Intl. Conf. on Acoustics, Speech and Signal Processing (ICASSP)
Event location: Vancouver, BC
ISBN: 9781479903566
DOI: 10.1109/ICASSP.2013.6637615
Abstract
The optimal weights for a beamformer that provide maximum directivity, are often found to be severely lacking in terms of robustness. Although an ideal implementation of the beamformer with these weights provides high directivity, minor perturbations of the weights or of sensor placement cause severe degradation. Therefore, a robustness constraint is often imposed during the beamformer's design stage. The classical method of diagonal loading is commonly used for this purpose. There are known results in this field which pertain to an array consisting of sensors with identical directivity-patterns and orientations. We extend these results to account for sensors with nonidentical directivity patterns, and sensors which share placement errors. We show that in such cases, modification of the classical loading scheme to incorporate nonidentical diagonal elements and off-diagonal elements is beneficial. © 2013 IEEE.
Authors with CRIS profile
Emanuël Habets
Professur für wahrnehmungsbasierte räumliche Audiosignalverarbeitung (AudioLabs) (Stiftungsprofessur)
Involved external institutions
Israel (IL)How to cite
APA:
Levin, D., Habets, E., & Gannot, S. (2013). Robust beamforming using sensors with nonidentical directivity patterns. In Proc. IEEE Intl. Conf. on Acoustics, Speech and Signal Processing (ICASSP) (pp. 91-95). Vancouver, BC: Vancouver, Canada.
MLA:
Levin, Dovid, Emanuël Habets, and Sharon Gannot. "Robust beamforming using sensors with nonidentical directivity patterns." Proceedings of the 2013 38th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2013, Vancouver, BC Vancouver, Canada, 2013. 91-95.
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