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

doi:10.19682/j.cnki.1005-8885.2018.1030

中国邮电高校学报(英文) ›› 2018, Vol. 25 ›› Issue (6): 81-89.doi: 10.19682/j.cnki.1005-8885.2018.1030

• Signal processing • 上一篇下一篇

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

收稿日期:2018-06-25 修回日期:2018-12-27 出版日期:2018-12-30 发布日期:2019-02-26
通讯作者: Chen Weigang, E-mail: chenwg@tju.edu.cn E-mail:chenwg@tju.edu.cn
作者简介:Chen Weigang, E-mail: chenwg@tju.edu.cn
基金资助:
This work was supported by the Joint Laboratory for Ocean Observation and Detection, the National Laboratory for Marine Science and Technology.

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.

摘要/Abstract

摘要： 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.

关键词: aperture extension, two-dimensional DOA estimation, cross-correlation matrix, ambiguity resolved

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

中图分类号:

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.

参考文献

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

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

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