Results 261 to 270 of about 2,940,152 (302)

Distributed Acoustic and Seismic Sensing

OFC/NFOEC 2007 - 2007 Conference on Optical Fiber Communication and the National Fiber Optic Engineers Conference, 2007
An overview of fiber optic distributed acoustic and seismic sensor system architectures is presented.
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Source Detection and Tracking for Underwater Distributed Acoustic Sensing [PDF]

2024 32nd European Signal Processing Conference (EUSIPCO)
Distributed Optical Fiber Sensing (DOFS) transforms conventional fiber optic cables into an extensive network of continuous sensors. It achieves this by exploiting the spectral, polarization and/or phase sensitivity of the propagating light to measurands of temperature, strain, pressure, vibrations etc.
Drylerakis, Konstantinos Theofilos, Belal, Mohammad, Mestre, Rafael, Norman, Timothy J., Evers, Christine   +4 more
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Distributed acoustic sensing for ocean acoustics

The Journal of the Acoustical Society of America
Distributed Acoustic Sensing (DAS) is an optical sensing technology increasingly used in ocean acoustics to measure underwater sound by transforming fiber optic cables into dense arrays of sensors, enabling high-resolution, kilometer-scale acoustic recordings.
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Distributed Acoustic Sensing for Geophysical Monitoring

Proceedings, 2012
Distributed Acoustic Sensing (DAS), a rapidly evolving fiber-optic based technology for permanent in-well and geophysical monitoring, has been used to record VSP data in multiple Shell assets onshore Canada, USA, Europe, and the Middle East. Useful in-well velocity data were gathered from the entire length of the well from wellhead to TD (up to 4 km ...
J. Mestayer, S. Grandi Karam, B. Cox, P. Wills, A. Mateeva, J. Lopez, D. Hill, A. Lewis   +7 more
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Distributed Acoustic Sensing: State of the Art

SPE Digital Energy Conference, 2013
Abstract Distributed Acoustic Sensing (DAS) is a newly developed passive fiber optic sensing technology. It has the ability to detect acoustic signals anywhere along the length of the fiber with a high frequency response and a tight spatial resolution.
Robert Cannon, Fred Aminzadeh
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Xdas: a Python Framework for Distributed Acoustic Sensing

Seismological Research Letters
Xdas is a Python library designed to manipulate Distributed Acoustic Sensing (DAS) data. It provides a unified abstraction for reading any DAS file format into a standardized Python object, streamlining data handling across different acquisition systems.
Alister Trabattoni, Marie Baillet, Martijn van den Ende, Diane Rivet, Eleonore Stutzmann, Claudio Strumia, Francesco Biagioli   +6 more
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SNR characterization in distributed acoustic sensing

SPIE Proceedings, 2016
In this paper we study the SNR associated with acoustic detection in Rayleigh-based Distributed Acoustic Sensing (DAS) systems. The study is focused on phase sensitive DAS due to its superiority in terms of linearity and sensitivity. Since DAS is based on coherent interference of backscattered light from multiple scatterers it is prone to signal fading.
Haniel Gabai, Avishay Eyal
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Distributed acoustic sensing in shallow water

The Journal of the Acoustical Society of America, 2006
The significance of Leonid Brekhovskikh to the ocean acoustics is undisputed. He was pioneering not only in terms of fundamental understanding of the ocean acoustic waveguide, but also the development of efficient and numerically stable approaches to propagation of sound in a stratified ocean. As such he has been an inspiration to a whole generation of
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How sensitive is distributed acoustic sensing?

Seventh European Workshop on Optical Fibre Sensors, 2019
We present fundamental limits on the strain resolution of phase sensitive distributed acoustic sensing based on considerations of thermal noise. These limits suggest that, despite ongoing advances, distributed sensors are unlikely to approach the sensing performance of traditional geophones and hydrophones.
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Distributed acoustic sensing with ocean applications

The Journal of the Acoustical Society of America
Extensive monitoring of acoustical activities is important for many fields, including biology, security, and ocean and Earth science. Distributed acoustic sensing (DAS) is an evolving technique for continuous, wide-coverage measurements of mechanical vibrations across oceans.
Angeliki Xenaxi, Peter Gerstoft, Ethan F. Williams, Shima Abadi   +3 more
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