通过可解释的深度矩阵分解来提高海洋声速概况表示的稳定性
Xinyun Hua1, Chi Zhang2, Chaojin Zhang2
1College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, 310027, China.
The Journal of the Acoustical Society of America
|December 19, 2023
概括
一种新的深度矩阵分解 (deep MD) 方法通过使用神经网络来拒绝噪音,有效地表示海洋声速概况 (SSP). 这种方法改善了SSP重建和在水下声学中传输损失的表征.
科学领域:
- 海洋学 海洋学 海洋学
- 声学 声学 声学 声学
- 数据科学数据科学数据科学
背景情况:
- 准确的海洋声速概况 (SSP) 对于水下声学应用至关重要.
- 现有的SSP表示方法在噪音和确定最佳数量的基础函数方面存在困难,导致潜在的过度拟合.
- 这限制了他们有效地从杂的SSP数据中学习的能力.
研究的目的:
- 开发一个强大的SSP表示算法,克服传统方法的局限性.
- 从杂的SSP数据中有效地学习大量具有强大的表示能力的基础函数.
- 提高SSP重建和水下声传输损失表征的准确性.
主要方法:
- 提出了一种新的算法:深度矩阵分解 (deep MD).
- 利用未经训练的深度神经网络作为矩阵分解内的噪声拒绝的先验.
- 引入了基于等级估计的停止策略,以确定深度MD的最佳终止时代.
主要成果:
- 深度MD在现实数据集中证明了对各种类型的噪音的稳定性.
- 提出的方法优于传统的SSP表示技术.
- 在SSP重建和传输损失表征方面取得了卓越的性能.
结论:
- 深度矩阵分解 (deep MD) 为海洋声速概况表示提供了强大且耐噪的解决方案.
- 这种方法提高了水下声学建模的准确性.
- 深度MD在现有的SSP表示技术上提供了显著的进步.
相关概念视频
Deriving the Speed of Sound in a Liquid
508
As with waves on a string, the speed of sound or a mechanical wave in a fluid depends on the fluid's elastic modulus and inertia. The two relevant physical quantities are the bulk modulus and the density of the material. Indeed, it turns out that the relationship between speed and the bulk modulus and density in fluids is the same as that between the speed and the Young's modulus and density in solids.
The speed of sound in fluids can be derived by considering a mechanical wave...
The speed of sound in fluids can be derived by considering a mechanical wave...
508
Uniform Depth Channel Flow: Problem Solving
66
To calculate the flow rate for a trapezoidal channel, first, identify the bottom width, side slope, and flow depth of the channel. The cross-sectional area (A) corresponding to the depth of flow (y), channel bottom width (B), and side slope (θ) is determined by:Next, calculate the wetted perimeter, which includes the bottom width and the sloped side lengths in contact with the water. Using the values of the cross-sectional area and the wetted perimeter, determine the hydraulic radius by...
66
Speed of Sound in Solids and Liquids
2.9K
Most solids and liquids are incompressible—their densities remain constant throughout. In the presence of an external force, the molecules tend to restore to their original positions, which is only possible because the constituents interact. The interactions help the constituents pass on information about external disturbances, like sound waves. Therefore, sound waves travel faster through these media. Compared to solids, the constituents in a liquid are less tightly bound. Thus, sound...
2.9K
Unsoundness of Aggregate due to Volume Change
114
Unsoundness in aggregates due to volume changes is primarily caused by the physical alterations aggregates undergo, such as freezing and thawing, thermal changes, and wetting and drying. Unsound aggregates, when subjected to these changes, result in volume change upon disintegration. This, in turn, contributes to the deterioration of concrete, including scaling, pop-outs, and cracking. Particular types of aggregates, such as porous flints, cherts, and those containing clay minerals, are...
114
Extraction: Partition and Distribution Coefficients
2.5K
The distribution law or Nernst's distribution law is the law that governs the distribution of a solute between two immiscible solvents. This law, also known as the partition law, states that if a solute is added to the mixture of two immiscible solvents at a constant temperature, the solute is distributed between the two solvents in such a way that the ratio of solute concentrations in the solvents remains constant at equilibrium.
For extracting a solute from an aqueous phase into an...
For extracting a solute from an aqueous phase into an...
2.5K
Perception of Sound Waves
4.5K
The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
4.5K


