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Quad-Quaternion MUSIC for DOA Estimation Using Electromagnetic Vector Sensors

Abstract

A new quad-quaternion model is herein established for an electromagnetic vector-sensor array, under which a multidimensional algebra-based direction-of-arrival (DOA) estimation algorithm, termed as quad-quaternion MUSIC (QQ-MUSIC), is proposed. This method provides DOA estimation (decoupled from polarization) by exploiting the orthogonality of the newly defined "quad-quaternion" signal and noise subspaces. Due to the stronger constraints that quad-quaternion orthogonality imposes on quad-quaternion vectors, QQ-MUSIC is shown to offer high robustness to model errors, and thus is very competent in practice. Simulation results have validated the proposed method.

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Correspondence to Yougen Xu.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License ( https://creativecommons.org/licenses/by/2.0 ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Gong, X., Liu, Z. & Xu, Y. Quad-Quaternion MUSIC for DOA Estimation Using Electromagnetic Vector Sensors. EURASIP J. Adv. Signal Process. 2008, 213293 (2009). https://doi.org/10.1155/2008/213293

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  • DOI: https://doi.org/10.1155/2008/213293

Keywords

  • Information Technology
  • Estimation Algorithm
  • Model Error
  • Quantum Information
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