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Direction-finding of coherent signals based on cylindrical vector-hydrophones array

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Abstract

In this paper, a new “particle-velocity-field and spatial smoothing” (PVFSS) algorithm is proposed for direction-finding of coherent signals, using the cylindrical vector-hydrophones array in the underwater acoustic medium. In contrast to the customary “spatial smoothing” technique, it provides a smaller reduction in the overall array’s spatial aperture. While in contrast to the “particle-velocity-field smoothing” technique, it may increase the number of decorrelate-able coherent signals. Moreover, an ESPRIT-based, closed-form direction-finding algorithm is proposed and a method of removing cyclic ambiguity is provided. Finally, the theoretical performance of the proposed algorithm is analyzed. Simulation results are shown to verify the efficacy of the proposed algorithm.

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Authors and Affiliations

  1. Department of Control Engineering, Aviation University, 130022, Changchun, Jilin, China

    Jian-Wu Tao & Wei Cui

  2. College of Communication Engineering, Jilin University, 130025, Changchun, Jilin, China

    Wen-Xiu Chang

Authors
  1. Jian-Wu Tao
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  2. Wen-Xiu Chang
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  3. Wei Cui
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Corresponding author

Correspondence to Jian-Wu Tao.

Additional information

This work was supported by the National Natural Science Foundation of China under Grants 60872088.

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Tao, JW., Chang, WX. & Cui, W. Direction-finding of coherent signals based on cylindrical vector-hydrophones array. SIViP 4, 221–232 (2010). https://doi.org/10.1007/s11760-009-0113-8

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  • DOI: https://doi.org/10.1007/s11760-009-0113-8

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