Capon beamspace beamforming for distributed acoustic arrays

Nicholas J. Roseveare; Mahmood R. Azimi-Sadjadi

doi:10.1117/12.721755

11 May 2007 Capon beamspace beamforming for distributed acoustic arrays

Nicholas J. Roseveare, Mahmood R. Azimi-Sadjadi

Proceedings Volume 6562, Unattended Ground, Sea, and Air Sensor Technologies and Applications IX; 65620K (2007) https://doi.org/10.1117/12.721755
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

Abstract

This paper presents the advantages of using distributed arrays with the beamspace implementation of a wideband Capon algorithm. Distributed arrays have recently demonstrated a decreased sensitivity to environmental coherence loss and array mismatches. In an attempt to build upon this robustness, beamspace preprocessing is applied in this paper. Beamspace allows sector-focused beamforming and reduced computational complexity. A unique property of this implementation of beamspace, namely being indifferent to losses of entire channels of data, has been demonstrated. This implementation of beamspace to Capon beamforming does not require beam orthogonalization, thus saving computational time, especially in the whitening process.

Citation Download Citation

Nicholas J. Roseveare and Mahmood R. Azimi-Sadjadi "Capon beamspace beamforming for distributed acoustic arrays", Proc. SPIE 6562, Unattended Ground, Sea, and Air Sensor Technologies and Applications IX, 65620K (11 May 2007); https://doi.org/10.1117/12.721755

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