从海底噪声压力测量结果中优化重建水波

IF 2.5 3区 工程技术 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS
Joris Labarbe, Alexandre Vieira, Didier Clamond
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引用次数: 0

摘要

我们考虑的问题是,在(先验未知)海面任意压力的情况下,从有噪声的海底压力测量结果中恢复海面波浪剖面。在没有噪声的情况下,Clamond 和 Labarbe(2023 年)提出的直接方法提供了恢复海面的有效途径。然而,测量压力的可分析性假设使得这种方法在存在噪声时效率低下。为了解决这一问题,我们在此引入了一种优化程序,该程序基于最小化恢复的海底压力与其测量值之间的距离。事实证明,这种方法可以很好地处理扰动信号。我们展示了这种方法在从未滤波的噪声数据中恢复重力-毛细管波方面的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimal reconstruction of water-waves from noisy pressure measurements at the seabed
We consider the problem of recovering the surface wave profile from noisy bottom pressure measurements with (a priori unknown) arbitrary pressure at the surface. Without noise, the direct approach developed in Clamond and Labarbe (2023) provides an effective way to recover the sea surface. However, the assumption of analyticity for the measured pressure renders this method inefficient in the presence of noise. In order to address this issue, we introduce here an optimisation procedure based on the minimisation of a distance between a recovered bottom pressure and its measurement. Such method proves to be well-designed to handle perturbed signals. We illustrate the effectiveness of this approach in the recovery of gravity-capillary waves from unfiltered noisy data.
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来源期刊
Computers & Fluids
Computers & Fluids 物理-计算机:跨学科应用
CiteScore
5.30
自引率
7.10%
发文量
242
审稿时长
10.8 months
期刊介绍: Computers & Fluids is multidisciplinary. The term ''fluid'' is interpreted in the broadest sense. Hydro- and aerodynamics, high-speed and physical gas dynamics, turbulence and flow stability, multiphase flow, rheology, tribology and fluid-structure interaction are all of interest, provided that computer technique plays a significant role in the associated studies or design methodology.
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