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A Computationally Efficient 2-D DOA Estimation Approach for Non-uniform Co-prime Arrays

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Communications and Networking (ChinaCom 2016)

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Abstract

This paper investigates the problem of two dimensional (2-D) directions-of-arrival (DOA) estimation of multiple signals in co-prime planar arrays. The array consists of two uniform planar arrays with their respective inter-element spacing being both larger than half wavelength, which can enhance the resolution but at the cost of phase ambiguity. The phase ambiguity problem can be addressed by combining the results of two subarrays. Specifically, we apply the multiple signal classification (MUSIC) algorithm to each subarray to acquire their respective spectrum; then we obtain the joint spatial spectrum, which is defined as the product of the respective spatial spectrums; Finally, according to co-prime property, we search over the angular field for the spectral peaks to estimate the DOA uniquely. Finally, we verify the effectiveness of the proposed method via simulations.

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Acknowledgment

This work is supported by Key Projects in the National Science and Technology Pillar Program during the Twelfth Fiveyear Plan Period (2011BAD32B02). Shandong Provincial Natural Foundation, China (ZR2017PF007 and ZR2016FB19).

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Authors and Affiliations

  1. College of Communications Engineering, PLA University of Science and Technology, Nanjing, 210007, China

    Fenggang Sun

  2. College of Information Science and Engineering, Shandong Agricultural University, Tai’an, 271018, China

    Fenggang Sun, Peng Lan & Yanbo Zi

  3. Ji’nan Wenwang Center, Jinan, 250100, China

    Lei Zhao

  4. Shandong Medicine Technician College, Tai’an, 271000, China

    Xiaozhi Li

Authors
  1. Fenggang Sun
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  2. Lei Zhao
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  3. Xiaozhi Li
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  4. Peng Lan
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  5. Yanbo Zi
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Corresponding author

Correspondence to Fenggang Sun .

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Editors and Affiliations

  1. Post and Telecommunications, Chongqing University, Chongqing, China

    Qianbin Chen

  2. Harbin Institute of Technology (HIT), Harbin, China

    Weixiao Meng

  3. Xidian University, Xi’an, China

    Liqiang Zhao

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© 2018 ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

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Sun, F., Zhao, L., Li, X., Lan, P., Zi, Y. (2018). A Computationally Efficient 2-D DOA Estimation Approach for Non-uniform Co-prime Arrays. In: Chen, Q., Meng, W., Zhao, L. (eds) Communications and Networking. ChinaCom 2016. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 210. Springer, Cham. https://doi.org/10.1007/978-3-319-66628-0_18

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  • DOI: https://doi.org/10.1007/978-3-319-66628-0_18

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-66627-3

  • Online ISBN: 978-3-319-66628-0

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