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Quad-Quaternion MUSIC for DOA Estimation Using Electromagnetic Vector Sensors
EURASIP Journal on Advances in Signal Processing volume 2008, Article number: 213293 (2009)
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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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