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DOA Estimation Using Sparse Representation of Beamspace and Element-Space Covariance Differencing

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Abstract

In order to eliminate the effect of noise on the performance of the direction-of-arrival (DOA) estimation and reduce the computational complexity, a sparse representation (SR) DOA estimation method is proposed. The proposed method first utilizes the beamspace and element-space covariance differencing to eliminate noise. Afterward, it vectorizes the difference covariance matrix. In a sequence, it establishes a new SR model to complete DOA estimation. Compared to existing SR DOA estimation methods, the proposed method significantly reduces the computational complexity since the parameters to be solved in its SR cost function are regardless of the number of sources and the number of array elements. Simulation results show that in the case of the unknown number of sources and low signal-to-noise ratios (SNRs), the proposed method has high DOA resolution and estimation accuracy.

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Data will be available on request from the authors.

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Acknowledgements

This research was supported by the National Natural Science Foundation of China (Grant No. 61701133).

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Authors and Affiliations

  1. Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin, 150001, China

    Aifei Liu, Shengguo Shi & Song Li

  2. Key Laboratory of Marine Information Acquisition and Security (Harbin Engineering University), Ministry of Industry and Information Technology, Harbin, 150001, China

    Aifei Liu, Shengguo Shi & Song Li

  3. College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin, 150001, China

    Fujia Xu, Aifei Liu, Shengguo Shi, Song Li & Ying Li

Authors
  1. Fujia Xu
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  2. Aifei Liu
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  3. Shengguo Shi
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  4. Song Li
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  5. Ying Li
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Correspondence to Aifei Liu.

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Xu, F., Liu, A., Shi, S. et al. DOA Estimation Using Sparse Representation of Beamspace and Element-Space Covariance Differencing. Circuits Syst Signal Process 41, 1596–1608 (2022). https://doi.org/10.1007/s00034-021-01846-y

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  • DOI: https://doi.org/10.1007/s00034-021-01846-y

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