A Fast Algorithm for High-Frequency Approximate Scattering Acoustic Field of Complex Multi-Targets Based on the Planar Elements Method

MENG Lining; ZHAO Jingshu; LI Zhenhui; LIU Rui

doi:10.11993/j.issn.2096-3920.2026-0090

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MENG Lining, ZHAO Jingshu, LI Zhenhui, LIU Rui. A Fast Algorithm for High-Frequency Approximate Scattering Acoustic Field of Complex Multi-Targets Based on the Planar Elements Method[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2026-0090

Citation:

MENG Lining, ZHAO Jingshu, LI Zhenhui, LIU Rui. A Fast Algorithm for High-Frequency Approximate Scattering Acoustic Field of Complex Multi-Targets Based on the Planar Elements Method[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2026-0090

Citation:

MENG Lining, ZHAO Jingshu, LI Zhenhui, LIU Rui. A Fast Algorithm for High-Frequency Approximate Scattering Acoustic Field of Complex Multi-Targets Based on the Planar Elements Method[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2026-0090

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A Fast Algorithm for High-Frequency Approximate Scattering Acoustic Field of Complex Multi-Targets Based on the Planar Elements Method

doi: 10.11993/j.issn.2096-3920.2026-0090

MENG Lining^{1, 2, 3
,},
ZHAO Jingshu^{1, 2, 3
,},
LI Zhenhui^{1, 2, 3
,},
LIU Rui^{1, 2, 3
,
,}

1.
National Key Laboratory of Underwater Acoustic Technology, Harbin Engineering University, Harbin 150001, China
2.
Key Laboratory of Marine Information Acquisition and Security(Harbin Engineering University), Ministry of Industry and Information Technology, Harbin 150001, China
3.
College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China

Received Date: 2026-05-12
Accepted Date: 2026-05-21
Rev Recd Date: 2026-05-20

Available Online: 2026-06-12

Abstract

Abstract

With the development of unmanned undersea vehicle(UUV) cluster operations, the detection and recognition of complex multi-targets underwater have garnered significant attention. To address this, we established a fast calculation model based on the Planar Elements method to improve both computational accuracy and efficiency. Initially, the method was employed to calculate the target characteristics of a dual-target model. The accuracy of this method was validated by comparing the calculation results with physical field simulations and experimental measurements from an anechoic water tank.To enhance computational efficiency, the OpenMP parallel algorithm was introduced. By optimizing the loop iteration scheduling mechanism according to the varying computational difficulties of complex multi-target scattering acoustic field characteristics under different incident angles and frequencies, high thread load balance was achieved, yielding a 5.3x speedup. This fast algorithm was then applied to investigate more complex multi-target models. By analyzing the angle-frequency maps of target characteristics, the regular variations in the high-frequency scattering acoustic field characteristics of multi-targets with increasing frequency were obtained, revealing that target strength exhibits extrema at certain angles. Meanwhile, high-frequency interference fringes were observed. The correlation between scattering characteristics and geometric positions was analyzed. The research results provide a theoretical reference for underwater target acoustic detection and characteristic studies.
- high-frequency acoustic scattering,
- planar elements method,
- multi-targets scattering,
- OpenMP parallel algorithm

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References(21)

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