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Sensors 2017, 17(5), 1170; doi:10.3390/s17051170

A Low-Complexity DOA and Polarization Method of Polarization-Sensitive Array

College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China
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Author to whom correspondence should be addressed.
Academic Editors: Zhiguo Shi, Yujie Gu and Rongxing Lu
Received: 20 March 2017 / Revised: 3 May 2017 / Accepted: 12 May 2017 / Published: 20 May 2017
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Abstract

This paper proposes a low-complexity method to estimate the direction of arrival and polarization based on the polarization sensitive array (PSA) which is composed of cross-dipoles. We built a half-quaternions model through the Cayley–Dickson form to remove the redundant information. Then, the directions of arrival (DOAs) were estimated via the root-MUSIC algorithm. Finally, the polarizations were estimated by generalized eigenvalue method. Unlike some existing searching algorithms, such as multiple signal classification (MUSIC), this method can avoid the peak searching and maintains high estimation accuracy. Moreover, we use the oblique projection operators to filter out the interference signals which are decoys of the target signal. Simulation results demonstrate the effectiveness and favorable performance of the proposed method. View Full-Text
Keywords: DOA estimation; polarization estimation; polarization sensitive array (PSA); quaternion DOA estimation; polarization estimation; polarization sensitive array (PSA); quaternion
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Dong, W.; Diao, M.; Gao, L.; Liu, L. A Low-Complexity DOA and Polarization Method of Polarization-Sensitive Array. Sensors 2017, 17, 1170.

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