Computationally efficient 2-D DOA estimation for non-uniform two-L-shaped array

doi:10.19682/j.cnki.1005-8885.2018.1030

JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOM ›› 2018, Vol. 25 ›› Issue (6): 81-89.doi: 10.19682/j.cnki.1005-8885.2018.1030

• Signal Processing • Previous Articles Next Articles

Computationally efficient 2-D DOA estimation for non-uniform two-L-shaped array

Yang Jinsheng, Xiang Yang, Chen Weigang, Dong Yangyang

1. School of Microelectronics, Tianjin University, Tianjin 300072, China
2. Joint Laboratory for Ocean Observation and Detection, National Laboratory for Marine Science and Technology, Qingdao 266237, China
3. School of Electronics Engineering, Xidian University, Xi'an 710071, China

Received:2018-06-25 Revised:2018-12-27 Online:2018-12-30 Published:2019-02-26
Contact: Chen Weigang, E-mail: chenwg@tju.edu.cn E-mail:chenwg@tju.edu.cn
About author:Chen Weigang, E-mail: chenwg@tju.edu.cn
Supported by:
This work was supported by the Joint Laboratory for Ocean Observation and Detection, the National Laboratory for Marine Science and Technology.

Abstract

Abstract: A two-dimensional direction-of-arrival (DOA) estimation method for non-uniform two-L-shaped array is presented in which the element spacing is larger than half-wavelength. To extract automatically paired low-variance cyclically ambiguous direction cosines and high-variance unambiguous direction cosines from the sub-blocks, the proposed method constructs and partitions the cross-correlation matrices. Then, the low-variance unambiguous direction cosines are obtained using the ambiguity resolved technique. Simulation results demonstrate that the proposed method has lower computation complexity and higher resolution than the existing methods especially when the elevation angles are between 70 and 90 degrees.

Key words: aperture extension, two-dimensional DOA estimation, cross-correlation matrix, ambiguity resolved

CLC Number:

TN911.7

Yang Jinsheng, Xiang Yang, Chen Weigang, Dong Yangyang. Computationally efficient 2-D DOA estimation for non-uniform two-L-shaped array[J]. JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOM, 2018, 25(6): 81-89.

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Computationally efficient 2-D DOA estimation for non-uniform two-L-shaped array

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