NDLI: Robust minimum sidelobe beamforming in mode space for circular arrays

Content Provider	IEEE Xplore Digital Library
Author	Yong Wang Yixin Yang Yuanliang Ma Xiaoyu Wang
Copyright Year	2012
Description	Author affiliation: College of Marine Engineering, Northwestern Polytechnical University, Xi'an, China, 710072 (Yong Wang; Yixin Yang; Yuanliang Ma; Xiaoyu Wang)
Abstract	Beamformer with low sidelobe is important in many applications, but its performance will degrade in the presence of errors in sensor array characteristics, such as position, gain and phase errors. White noise gain constraint is always used to improve the robustness, but it is not clear how to choose the related parameters according to the given level of errors. The robust method based on worst-case performance optimization can use the a priori knowledge of the error levels, but not sufficiently. The bounds of the manifold vector uncertainty set cannot be easily obtained. In this paper, a feasible way is used to derive the bounds considering the errors in sensor array characteristics together, and then a robust minimum sidelobe beamforming method based on worst-case performance optimization in mode space for circular arrays is presented. This problem can be transformed to convex optimization and solved by second-order cone programming. Simulation results show the computation load of this method is effectively reduced and the results are more reliable.
Starting Page	300
Ending Page	304
File Size	1125352
Page Count	5
File Format	PDF
ISBN	9781467321921
e-ISBN	9781467321938
DOI	10.1109/ICSPCC.2012.6335704
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-08-12
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Manifolds Uncertainty Beamforming Array signal processing Circular arrays Worst-case performance optimization Robustness Vectors Second-order cone programming Optimization Sensor arrays
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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