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Finding the distribution of vibro-acoustic energy in complex built-up structures in the mid-to-high frequency regime is a difficult task. In particular, structures with large variation of local wavelengths and/or characteristic scales pose…

混沌动力学 · 物理学 2015-05-20 Dmitrii N Maksimov , Gregor Tanner

As millimeter-wave (mmWave) MIMO systems adopt larger antenna arrays, near-field propagation becomes increasingly prominent, especially for users close to the transmitter. Traditional far-field beam training methods become inadequate, while…

信息论 · 计算机科学 2026-02-03 Weicao Deng , Binpu Shi , Min Li , Osvaldo Simeone

Satellite altimetry has been widely utilized to monitor global sea surface dynamics, enabling investigation of upper ocean variability from basin-scale to localized eddy ranges. However, the sparse spatial resolution of observational…

大气与海洋物理 · 物理学 2024-08-26 Qiuchang Han , Xingliang Jiang , Yang Zhao , Xudong Wang , Zhijin Li , Renhe Zhang

Guided wave-based structural health monitoring (SHM) remains a powerful strategy for identifying early-stage defects and safeguarding vital aerospace structures. Yet, its practical use is often hindered by the enormous, high-dimensional…

信号处理 · 电气工程与系统科学 2025-04-16 Yiming Fan , Dimitris G Giovanis , Fotis Kopsaftopoulos

Cost-effective localization methods for Autonomous Underwater Vehicle (AUV) navigation are key for ocean monitoring and data collection at high resolution in time and space. Algorithmic solutions suitable for real-time processing that…

机器人学 · 计算机科学 2025-03-12 Ellen Davenport , Khoa Nguyen , Junsu Jang , Clair Ma , Sean Fish , Luc Lenain , Florian Meyer

Accurate ocean forecasting systems are essential for understanding marine dynamics, which play a crucial role in sectors such as shipping, aquaculture, environmental monitoring, and coastal risk management. Traditional numerical solvers,…

大气与海洋物理 · 物理学 2025-07-01 Daniel Holmberg , Emanuela Clementi , Italo Epicoco , Teemu Roos

Passive acoustics is a versatile tool for maritime situational awareness, enabling applications such as source detection and localization, marine mammal tracking, and geoacoustic inversion. This study focuses on estimating the range between…

信号处理 · 电气工程与系统科学 2025-08-29 Junsu Jang , William S Hodgkiss , Florian Meyer

Downscaling, or super-resolution, provides decision-makers with detailed, high-resolution information about the potential risks and impacts of climate change, based on climate model output. Machine learning algorithms are proving themselves…

大气与海洋物理 · 物理学 2024-04-30 Robbie A. Watt , Laura A. Mansfield

Multiple-input multiple-output (MIMO) millimeter wave (mmWave) communication is a key technology for next generation wireless networks. One of the consequences of utilizing a large number of antennas with an increased bandwidth is that…

信号处理 · 电气工程与系统科学 2020-02-19 Mingjin Wang , Feifei Gao , Mark F. Flanagan , Nir Shlezinger , Yonina C. Eldar

The impacts of climate change are felt by most critical systems, such as infrastructure, ecological systems, and power-plants. However, contemporary Earth System Models (ESM) are run at spatial resolutions too coarse for assessing effects…

计算机视觉与模式识别 · 计算机科学 2017-03-10 Thomas Vandal , Evan Kodra , Sangram Ganguly , Andrew Michaelis , Ramakrishna Nemani , Auroop R Ganguly

We consider the problem of large wave prediction in two-dimensional water waves. Such waves form due to the synergistic effect of dispersive mixing of smaller wave groups and the action of localized nonlinear wave interactions that leads to…

大气与海洋物理 · 物理学 2017-04-26 Mohammad Farazmand , Themistoklis P. Sapsis

Marine mammals are increasingly vulnerable to human disturbance and climate change. Their diving behavior leads to limited visual access during data collection, making studying the abundance and distribution of marine mammals challenging.…

Global return values of marine wind speed and significant wave height are estimated from very large aggregates of archived ensemble forecasts at +240-h lead time. Long lead time ensures that the forecasts represent independent draws from…

大气与海洋物理 · 物理学 2014-07-22 Øyvind Breivik , Ole Johan Aarnes , Saleh Abdalla , Jean-Raymond Bidlot , Peter A. E. M. Janssen

Distributed Acoustic Sensing (DAS) is a novel technology that allows sampling of the seismic wavefield densely over a broad frequency band. This makes it an ideal tool for surface wave studies. In this study, we evaluate the potential of…

地球物理 · 物理学 2023-04-24 Amin Rahimi Dalkhani , Mus'ab Al Hasani , Guy Drijkoningen , Cornelis Weemstra

Bayesian full waveform inversion (FWI) offers uncertainty-aware subsurface models; however, posterior sampling directly on observed seismic shot records is rarely practical at the field scale because each sample requires numerous…

地球物理 · 物理学 2025-12-16 Mohammad H. Taufik , Tariq Alkhalifah

Coastal hypoxia, especially in the northern part of Gulf of Mexico, presents a persistent ecological and economic concern. Seasonal models offer coarse forecasts that miss the fine-scale variability needed for daily, responsive ecosystem…

机器学习 · 计算机科学 2026-02-06 Magesh Rajasekaran , Md Saiful Sajol , Chris Alvin , Supratik Mukhopadhyay , Yanda Ou , Z. George Xue

The performances of phase-averaged parametric nearshore wave transformation models depend significantly on a reliable estimate of the wave breaker index r (the breaker height-to-depth ratio), a free model parameter that essentially controls…

大气与海洋物理 · 物理学 2021-06-10 Chi Zhang , Yuan Li , Yu Cai , Jian Shi , Jinhai Zheng , Feng Cai , Hongshuai Qi

Sidescan sonar is a small and cost-effective sensing solution that can be easily mounted on most vessels. Historically, it has been used to produce high-definition images that experts may use to identify targets on the seafloor or in the…

机器人学 · 计算机科学 2022-06-22 Nils Bore , John Folkesson

Climate change is intensifying rainfall extremes, making high-resolution precipitation projections crucial for society to better prepare for impacts such as flooding. However, current Global Climate Models (GCMs) operate at spatial…

机器学习 · 计算机科学 2024-12-20 Ran Lyu , Linhan Wang , Yanshen Sun , Hedanqiu Bai , Chang-Tien Lu

The regularity of solutions to the stochastic nonlinear wave equation plays a critical role in the accuracy and efficiency of numerical algorithms. Rough or discontinuous initial conditions pose significant challenges, often leading to a…

数值分析 · 数学 2024-12-20 Jiachuan Cao , Buyang Li , Katharina Schratz
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