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Inversion of Rayleigh-wave dispersion data is particularly challenging at sites with strong impedance contrasts, where modal energy often transitions smoothly from the fundamental to higher modes at low frequencies. Analysts may…

地球物理 · 物理学 2025-12-15 Mrinal Bhaumik , Brady R. Cox

Thanks to the broadband nature of the Distributed Acoustic Sensing (DAS) measurement, a roadside section of the Stanford DAS-2 array can record seismic signals from various sources. For example, it measures the earth's quasi-static…

地球物理 · 物理学 2020-06-03 Siyuan Yuan , Ariel Lellouch , Robert G. Clapp , Biondo Biondi

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

We rigorously assess the potential for extracting high-resolution, multi-mode surface wave dispersion data from distributed acoustic sensing (DAS) measurements using active-source multichannel analysis of surface waves (MASW). We have…

地球物理 · 物理学 2022-08-31 Joseph P. Vantassel , Brady R. Cox , Peter G. Hubbard , Michael Yust

The Linear Parameter Varying Dynamical System (LPV-DS) is an effective approach that learns stable, time-invariant motion policies using statistical modeling and semi-definite optimization to encode complex motions for reactive robot…

机器人学 · 计算机科学 2024-03-26 Sunan Sun , Haihui Gao , Tianyu Li , Nadia Figueroa

The growing use of information hiding in network streaming media for covert communication poses a significant security threat, necessitating the development of robust detection technologies. However, existing steganalysis methods for…

密码学与安全 · 计算机科学 2026-05-22 Pengcheng Zhou , Pianran Guo , Shuhua Chen , Mengqin Zhao , Zhongliang Yang , Linna Zhou

Distributed acoustic sensing (DAS) technology represents an innovative fiber-optic-based sensing methodology that enables real-time acoustic signal monitoring through the detection of minute perturbations along optical fibers. This sensing…

音频与语音处理 · 电气工程与系统科学 2025-03-27 Shuaikai Shi , Qijun Zong

Extensive monitoring of acoustic activities is important for many fields, including biology, security, oceanography, and Earth science. Distributed acoustic sensing (DAS) is an evolving technique for continuous, wide-coverage measurements…

地球物理 · 物理学 2025-08-27 Angeliki Xenaki , Peter Gerstoft , Ethan Williams , Shima Abadi

Distributed Acoustic Sensing (DAS) technology finds growing applications across various domains. However, data distribution disparities due to heterogeneous sensing environments pose challenges for data-driven artificial intelligence (AI)…

计算机视觉与模式识别 · 计算机科学 2025-08-07 Kun Gui , Hongliang Ren , Shang Shi , Jin Lu , Changqiu Yu , Quanjun Cao , Guomin Gu , Qi Xuan

Distributed Acoustic Sensing (DAS) of ambient vibrations is a promising technique in the context of structural health monitoring of civil engineering structures. The methodology uses Rayleigh backscattered light from small deformations at…

Remote sensing lightweight foundation models have achieved notable success in online perception within remote sensing. However, their capabilities are restricted to performing online inference solely based on their own observations and…

计算机视觉与模式识别 · 计算机科学 2024-06-12 Zhechao Wang , Peirui Cheng , Pengju Tian , Yuchao Wang , Mingxin Chen , Shujing Duan , Zhirui Wang , Xinming Li , Xian Sun

Reconfigurable Intelligent Surfaces (RIS) hold the promise of improving significantly coverage, as well as spectral and energy efficiency in wireless communication systems. Techniques based on RIS form a key technology for 6G systems. An…

信息论 · 计算机科学 2025-08-15 Jiawei Qiu , Harry Leib

This study proposes an anomaly-detection framework for monitoring exposure-length variations in submarine free-span cables using Distributed Acoustic Sensing (DAS), which is one of the distributed fiber-optic sensing technologies. To…

信号处理 · 电气工程与系统科学 2026-04-29 Sakiko Mishima , Yoshiyuki Yajima , Noriyuki Tonami , Tomoyuki Hino , Shugo Aibe , Junichiro Saikawa , Koji Mizuguchi

This work presents a purely data-driven, wavelet-based framework for modal identification and reduced-order modeling of mechanical systems with assumed linear dynamics characterized by closely spaced modes with classical or non-classical…

信号处理 · 电气工程与系统科学 2025-10-28 Anargyros Michaloliakos , Benjamin J. Chang , Lawrence A. Bergman , Alexander F. Vakakis

Directional area scattering factor (DASF) is a critical canopy structural parameter for vegetation monitoring. It provides an efficient tool for decoupling of canopy structure and leaf optics from canopy reflectance. Current standard…

计算工程、金融与科学 · 计算机科学 2022-05-02 Yi Lin , Siyuan Liu , Lei Yan , Kai Yan , Yelu Zeng , Bin Yang

With the development of smart cities, urban surveillance video analysis will play a further significant role in intelligent transportation systems. Identifying the same target vehicle in large datasets from non-overlapping cameras should be…

计算机视觉与模式识别 · 计算机科学 2020-03-17 Huibing Wang , Jinjia Peng , Guangqi Jiang , Fengqiang Xu , Xianping Fu

Submarine cables play a critical role in global internet connectivity, energy transmission, and communication but remain vulnerable to accidental damage and sabotage. Recent incidents in the Baltic Sea highlighted the need for enhanced…

We present a sequential data assimilation algorithm based on the ensemble Kalman inversion to estimate the near-surface shear wave velocity profile and damping when heterogeneous data and a priori information that can be represented in…

地球物理 · 物理学 2020-05-07 Elnaz Seylabi , Andrew Stuart , Domniki Asimaki

This work proposes RIS-enabled channel signature modulation (RIS-CSM), a lightweight index modulation scheme for reconfigurable intelligent surfaces (RIS). An N-element RIS is partitioned into disjoint groups, each employing predetermined…

信息论 · 计算机科学 2025-10-17 M. A. Teeti

A novel data-driven method of modal analysis for complex flow dynamics, termed as reduced-order variational mode decomposition (RVMD), has been proposed, combining the idea of the separation of variables and a state-of-the-art nonstationary…

流体动力学 · 物理学 2022-09-27 Zi-Mo Liao , Zhiye Zhao , Liang-Bing Chen , Zhen-Hua Wan , Nan-Sheng Liu , Xi-Yun Lu
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