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A generalized eigenspace-based beamformer with robust capabilities

This paper presents a robust beamforming based on the generalized eigenspace-based (GEIB) technique. It has been shown that the GEIB beamformer demonstrates the advantage of less sensitivity to small pointing errors over the eigenspace-based (ESB) technique. However, the GEIB still could not deal with the large pointing error near the edge of the mainlobe. Shaping the noise subspace with the estimated steering vector, we propose an effective technique to achieve more robust capabilities than the GEIB and ESB.