Quad-Quaternion MUSIC for DOA Estimation Using Electromagnetic Vector Sensors. (12th April 2009)

• Record Type: Journal Article
• Authors: Gong Gong, Xiaofeng Xiaofeng; Liu Liu, Zhiwen Zhiwen; Xu Xu, Yougen Yougen
• Other Names: Verly Verly Jacques Jacques Academic Editor.
• Is Part Of: EURASIP journal on advances in signal processing. Volume 2008(2008)
• Publication Date: 2009-04-12
• Subjects: Signal processing -- Periodicals; Traitement du signal; Signal processing; Periodicals; 621.3822
• DOI: 10.1155/2008/213293
• Languages: English
• ISSNs: 1687-6172

Abstract

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.