A robust capon beamformer against uncertainty of nominal steering vector

Authors:
Zhu Liang Yu;Meng Hwa Er
Affiliations:
Center for Signal Processing, Nanyang Technological University, Singapore;School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore
Venue:
EURASIP Journal on Applied Signal Processing
Year:
2006

Citing 4
Cited 2

On robust Capon beamforming and diagonal loading

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A Bayesian approach to robust adaptive beamforming

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Doubly constrained robust Capon beamformer

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Robust adaptive beamforming using worst-case performance optimization: a solution to the signal mismatch problem

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Robust response control for adaptive beamformers against arbitrary array imperfections

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Robust adaptive beamforming in partly calibrated sparse sensor arrays

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Abstract

A robust Capon beamformer (RCB) against the uncertainty of nominal array steering vector (ASV) is formulated in this paper. The RCB, which can be categorized as diagonal loading approach, is obtained by maximizing the output power of the standard Capon beamformer (SCB) subject to an uncertainty constraint on the nominal ASV. The bound of its output signal-to-interference-plus-noise ratio (SINR) is also derived. Simulation results show that the proposed RCB is robust to arbitrary ASV error within the uncertainty set.