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High-order propagator-based DOA estimators using a coprime array without the source number

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Abstract

A novel direction of arrival (DOA) estimating method is proposed based on the coprime array, which can work without a priori information of the source number. The fourth-order statistics is adopted to construct a virtual array with a large aperture, which can also suppress Gaussian noise leading to a higher estimation accuracy and more importantly allowing the propagator construction. A propagator combining source number estimation and DOA estimation is presented firstly. Then considering the risk brought by the source number estimator, an improved propagator is constructed without the priori or estimated source number. The performance of the proposed method has been verified through some simulations.

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Acknowledgements

Authors acknowledge Key-Area Research and Development Program of Guangdong Province under Grants 2021B0101 310003, National Natural Science Foundation of China under Grants 62001127 and Guangzhou Municipal Science and Technology Project 202102020701.

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Authors and Affiliations

  1. School of Integrated Circuits, Guangdong University of Technology, Guangzhou, 510000, China

    Shaozhi Guo, Jianzhong Li & Xiaoming Xiong

  2. School of Automation, Guangdong University of Technology, Guangzhou, 510000, China

    Shaozhi Guo & Shuting Cai

  3. School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510000, China

    Dongxiang Luo

  4. Institute of Semiconductors, South China Normal University, Guangzhou, 510631, China

    Dongxiang Luo

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  1. Shaozhi Guo
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  2. Shuting Cai
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  3. Jianzhong Li
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  4. Dongxiang Luo
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  5. Xiaoming Xiong
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Correspondence to Jianzhong Li.

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Guo, S., Cai, S., Li, J. et al. High-order propagator-based DOA estimators using a coprime array without the source number. SIViP 17, 519–525 (2023). https://doi.org/10.1007/s11760-022-02256-6

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