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The Sound Source Location Based on Phase Conjugation and Acoustic Superlens

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Abstract

In order to break through the diffraction limit of traditional sound sources, an idea of far-field super-resolution imaging based on acoustic superlens is proposed, that is, acoustic super-lens is used to transmit near-field sound field information to the far-field, and far-field super-resolution imaging is realized by combining phase conjugate algorithm. In this paper, the sound source localization effect of the two-dimensional honeycomb acoustic superlens of water/mercury material is systematically studied, and the sub-wavelength imaging with a resolution of 0.22λ is obtained by simulating the point sound source imaging through numerical simulation, and the imaging principle of the refractive index n = –1 configuration is explained by combining the imaging principle of flat lens imaging and the law of refraction. A multi-lens was designed for far-field localization of point sound sources, and sub-wavelength imaging with a resolution of 0.19 λ was obtained.

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Funding

This article was completed with the support of the National Natural Science Foundation of China (no. 51609037). At the same time, I would like to thank Dalian University of Technology for funding the basic research business fee (no. DUT22GF206).

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Authors and Affiliations

  1. State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, School of Naval Architecture, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, 116024, Dalian, China

    S. Liu, M. Li & R. Zhao

Authors
  1. S. Liu
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  2. M. Li
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  3. R. Zhao
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Correspondence to S. Liu.

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Liu, S., Li, M. & Zhao, R. The Sound Source Location Based on Phase Conjugation and Acoustic Superlens. Acoust. Phys. 70, 58–67 (2024). https://doi.org/10.1134/S1063771023600213

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  • DOI: https://doi.org/10.1134/S1063771023600213

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