Abstract
The acoustic stealth shape design of the underwater vehicle has become a topic of considerable current interest to the experts engaging underwater acoustic countermeasure technology in recent years. During tracking the target, the echo strength of head shape is easily exposed and detected for the underwater vehicle, which directly affects its acoustic stealth performance. This paper proposes an optimal design method for the acoustic stealth shape of the underwater vehicle head with relatively lower target strength (TS), based on the Nelder–Mead optimization algorithm and finite element method. In this method, Bernstein polynomials are used to describe the underwater vehicle head shape deviation, and the optimization objective function is given as the weighting function of the TS of underwater vehicles head with different angles and frequencies. Then, the two optimized results with different situations are given, which are evaluated using the angle detecting rate. Finally, the 2D axisymmetric calculation method of the underwater acoustic scattering field is used to verify the TS calculation in this paper. The optimization design method may provide guidance for the lower TS shape design of the underwater vehicle, which may realize the automatic design of the lower TS shape with incident plane waves at given angles and given frequency bands.
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Funding
This work was supported by the Postgraduate Research & Practice Innovation Program of Jiangsu Province (No. KYCX19_1714) and Scientific Research Start-Up Fund for Young Teachers of Jiangsu University of Science and Technology (No. 1142931805).
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Li, B., Peng, Z., Wen, H. et al. Research on the Optimization Design of Acoustic Stealth Shape of the Underwater Vehicle Head. Acoust Aust 48, 39–47 (2020). https://doi.org/10.1007/s40857-019-00170-5
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DOI: https://doi.org/10.1007/s40857-019-00170-5