Efficient Mode-Coupling Calculation for Constant Depth Ocean with Range-Dependent Sound–Speed Fluctuation
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Title
- Efficient Mode-Coupling Calculation for Constant Depth Ocean with Range-Dependent Sound–Speed Fluctuation
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Author(s)
- Park, Jungyong; Yang, Haesang
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Alternative Author(s)
- 박중용
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Publication Year
- 2022-12
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Abstract
- In this paper, a criterion for efficient coupled-mode matrix calculation in a constant depth ocean with range-dependent sound–speed fluctuation is proposed. The usual stepwise coupled mode requires high computational power to calculate the mode-coupling matrix at each interface of the range segment. To reduce the computational complexity, the criterion for selecting appropriate mode pairs, which strongly affects the mode-coupling matrix, is derived from perturbation theory. This criterion determines the effective range of the modal beat wavenumber. Numerical examples indicate that compared with the full calculation of the mode-coupling matrix, for the calculation using the proposed criterion, the computational complexity is significantly reduced, while the accuracies of the mode-coupling matrix and acoustic field are maintained.
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ISSN
- 2591-7285
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/42793
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DOI
- 10.1142/s2591728521500249
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Bibliographic Citation
- Journal of Theoretical and Computational Acoustics, v.30, no.4, 2022
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Publisher
- WORLD SCIENTIFIC PUBL CO PTE LTD
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Keywords
- coupled-mode; coupling matrix; sound speed fluctuation
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Type
- Article
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Language
- English
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Document Type
- Article; Early Access
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