DocumentCode :
3142655
Title :
Design of robust polynomial beamformers for symmetric arrays
Author :
Mabande, Edwin ; Buerger, Michael ; Kellermann, Walter
Author_Institution :
Multimedia Commun. & Signal Process., Univ. of Erlangen-Nuremberg, Erlangen, Germany
fYear :
2012
fDate :
25-30 March 2012
Firstpage :
1
Lastpage :
4
Abstract :
Polynomial broadband beamforming designs enable an easy, smooth, and dynamic steering of the main beam. A number of design methods based on constrained optimization have been proposed recently which allow for the control of the robustness of these designs. Of course, the addition of robustness constraints reduces the number of degrees of freedom of the design. In this paper, we present a method to enhance the spatial selectivity of the robust polynomial beamformer design by exploiting the structure of symmetric arrays while still satisfying the robustness constraints. The effectiveness of this method is shown in design examples for symmetric linear and circular arrays.
Keywords :
array signal processing; beam steering; optimisation; polynomials; circular arrays; constrained optimization; degrees of freedom; dynamic beam steering; robust polynomial broadband beamforming designs; symmetric array structure; symmetric linear array; Acoustics; Array signal processing; Microphones; Polynomials; Robustness; Sensor arrays; Robust Polynomial Beamformer; Symmetric Arrays;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2012 IEEE International Conference on
Conference_Location :
Kyoto
ISSN :
1520-6149
Print_ISBN :
978-1-4673-0045-2
Electronic_ISBN :
1520-6149
Type :
conf
DOI :
10.1109/ICASSP.2012.6287802
Filename :
6287802
Link To Document :
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