A Robust Broad-Band Beamformer with Spatial and Frequency Derivative Constraints

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概要

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• In this paper, we propose a set of constraints for adaptive broad-band beamforming in the presence of angular errors. We first present spatial and frequency derivative constraints (SFDC) for the design of the quiescent beamformer response. With the wavelet-based blocking matrices, the proposed generalized sidelobe canceller (GSC) preserves the desired signal, and it is less sensitive to the broad-band noise. To make this beamformer more robust to the directional mismatch, we add a pseudo-interference algorithm in the weight adaptive process. Analysis and simulation results demonstrate that the angular beamwidth is insensitive to the input signal-to-noise ratio (SNR).

• （社）電子情報通信学会の論文
• 2009-02-01

著者

• Chu Yi

  Department of Internal Medicine and Pharmacology, University of Iowa Carver College of Medicine

• Chu Yi

  Department Of Electronic Engineering Ching Yun University

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