Analysis on Acoustic Scattering Characteristics of Icosahedral Composite Quasi-Spherical Scatterer

DONG Yanhua; ZHOU Fulin; FAN Jun; WANG Bin; WANG Wenhuan; XIONG Jianbing

doi:10.11993/j.issn.2096-3920.2026-0078

Volume 34 Issue 3

Jun 2026

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Article Navigation > Journal of Unmanned Undersea Systems > 2026 > 34(3): 480-488

DONG Yanhua, ZHOU Fulin, FAN Jun, WANG Bin, WANG Wenhuan, XIONG Jianbing. Analysis on Acoustic Scattering Characteristics of Icosahedral Composite Quasi-Spherical Scatterer[J]. Journal of Unmanned Undersea Systems, 2026, 34(3): 480-488. doi: 10.11993/j.issn.2096-3920.2026-0078

Citation:

DONG Yanhua, ZHOU Fulin, FAN Jun, WANG Bin, WANG Wenhuan, XIONG Jianbing. Analysis on Acoustic Scattering Characteristics of Icosahedral Composite Quasi-Spherical Scatterer[J]. Journal of Unmanned Undersea Systems, 2026, 34(3): 480-488. doi: 10.11993/j.issn.2096-3920.2026-0078

Citation:

DONG Yanhua, ZHOU Fulin, FAN Jun, WANG Bin, WANG Wenhuan, XIONG Jianbing. Analysis on Acoustic Scattering Characteristics of Icosahedral Composite Quasi-Spherical Scatterer[J]. Journal of Unmanned Undersea Systems, 2026, 34(3): 480-488. doi: 10.11993/j.issn.2096-3920.2026-0078

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Analysis on Acoustic Scattering Characteristics of Icosahedral Composite Quasi-Spherical Scatterer

doi: 10.11993/j.issn.2096-3920.2026-0078

DONG Yanhua^{1, 2
,},
ZHOU Fulin^{1, 2
,},
FAN Jun^{1, 2},
WANG Bin^{1, 2},
WANG Wenhuan^{1, 2},
XIONG Jianbing^{1, 2}

1.
Key Laboratory of Marine Intelligent Equipment and System, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
2.
State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received Date: 2026-04-21
Accepted Date: 2026-05-18
Rev Recd Date: 2026-05-11

Available Online: 2026-05-28

Abstract

Abstract

To address the difficulties in deployment and insufficient acoustic adaptability of traditional underwater acoustic standard targets, a lightweight quasi-spherical scatterer with icosahedral buoy-rod composite structure was proposed. Curved buoyant units and a rod-sphere framework formed an approximate spherical scattering interface, and a permeable design enabled buoyancy self-balance, which improved deployment feasibility while preserving spherical scattering characteristics. A frequency-segmented numerical model for acoustic scattering was established for calculation. The fluid-structure coupled finite element method(FEM) was adopted for low-frequency analysis, while the iterative physical acoustics(IPA) was employed at medium and high frequencies. The variations in acoustic scattering strength with acoustic frequency and incident direction were numerically analyzed, and the formation mechanism of path-difference interference was clarified. Experimental measurements were further carried out to validate the proposed modeling method and the corresponding conclusions. The results show that the average target strength of the proposed quasi-spherical scatterer is approximately 3.87 dB higher than that of a rigid sphere with the same radius. Meanwhile, the structure exhibits coherent interference characteristics caused by multiple scattering components. Therefore, it can serve as an underwater acoustic calibration target and provide a useful reference for experimental calibration, acoustic scattering analysis, and testing of unmanned underwater systems.
- acoustic scattering,
- quasi-spherical scatterer,
- underwater acoustic calibration,
- finite element method,
- iterative physical acoustics

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References(19)

References

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