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Research Progress in Distributed Acoustic Sensing Techniques
Sensors, 2022 Distributed acoustic sensing techniques based on Rayleigh scattering have been widely used in many applications due to their unique advantages, such as long-distance detection, high spatial resolution, and wide sensing bandwidth. In this paper, we provide a review of the recent advancements in distributed acoustic sensing techniques.
Ying Shang, Jiasheng Ni, Yanjie Zhao
exaly +6 more sources
Surface distributed acoustic sensing for mineral exploration. [PDF]
Sci RepAbstract As a receiver array for active-source seismic studies, the use of distributed acoustic sensing (DAS) technology is well established for vertical seismic profiling. However, given the sensitivity of fiber-optic cables, successful and cost-effective surface array studies in reflection seismology and for mineral exploration are ...
Gyger L +4 more
europepmc +5 more sources
Earthquake focal mechanisms with distributed acoustic sensing. [PDF]
Nat Commun, 2023 AbstractEarthquake focal mechanisms provide critical in-situ insights about the subsurface faulting geometry and stress state. For frequent small earthquakes (magnitude< 3.5), their focal mechanisms are routinely determined using first-arrival polarities picked on the vertical component of seismometers. Nevertheless, their quality is usually limited
Li J, Zhu W, Biondi E, Zhan Z.
europepmc +7 more sources
Review of a Specialty Fiber for Distributed Acoustic Sensing Technology
Photonics, 2022 Specialty fibers have introduced new levels of flexibility and variability in distributed fiber sensing applications. In particular, distributed acoustic sensing (DAS) systems utilized] the unique functions of specialty fibers to achieve performance ...
Qizhen Sun, Zhijun Yan, Cunzheng Fan
exaly +3 more sources
Filtering Strategies for Deformation-Rate Distributed Acoustic Sensing
Sensors, 2022 Deformation-rate distributed acoustic sensing (DAS), made available by the unique designs of certain interrogator units, acquires seismic data that are theoretically equivalent to the along-fiber particle velocity motion recorded by geophones for ...
Jihyun Yang, Jeffrey Shragge, Ge Jin
exaly +3 more sources
Real-Time Signal Processing for Distributed Acoustic Sensing and Acoustic Sensing Systems Under Non-Stationary Noise. [PDF]
Sensors (Basel)Real-time acoustic signal enhancement in non-stationary noise remains challenging, especially for sensing systems that must be causal, low latency, and interpretable.
Mensah SY, Zhang T, Zhao X, Mahmud NA.
europepmc +2 more sources
Physics-based earthquake early warning using distributed acoustic sensing. [PDF]
Sci RepWe present a physics-based point source earthquake early warning system using distributed acoustic sensing (DAS) data. All core modules of the system are based on physical principles of wave propagation, and models that describe the earthquake source and
Ben-Zeev S, Lior I.
europepmc +2 more sources
Distributed Acoustic Sensing Using Chirped-Pulse Phase-Sensitive OTDR Technology
Sensors, 2019 In 2016, a novel interrogation technique for phase-sensitive (Φ)OTDR was mathematically formalized and experimentally demonstrated, based on the use of a chirped-pulse as a probe, in an otherwise direct-detection-based standard setup: chirped-pulse (
Luis Costa +2 more
exaly +3 more sources
Decoding Fluid Flow Characteristics Through Distributed Acoustic Sensing: A Novel Approach. [PDF]
Sensors (Basel)Flow characteristic monitoring includes parameters such as flow regime, fluid characteristic frequency, and flow rate, which are crucial for optimizing production and ensuring the safety of oil and gas transportation systems.
Ku H, Zhang K, He X, Zhang M, Lu H.
europepmc +2 more sources
Distributed Acoustic Sensing Based on Coherent Microwave Photonics Interferometry
Sensors, 2021 A microwave photonics method has been developed for measuring distributed acoustic signals. This method uses microwave-modulated low coherence light as a probe to interrogate distributed in-fiber interferometers, which are used to measure acoustic ...
Liwei Hua +9 more
doaj +1 more source