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12 December 2018 Field test of surface seismic measurement with a distributed acoustic sensing system
Tuanwei Xu, Shengwen Feng, Jianfen Huang, Yang Yang, Fang Li, Jinming Zhou, Hesper Yu
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Proceedings Volume 10849, Fiber Optic Sensing and Optical Communication; 108490D (2018) https://doi.org/10.1117/12.2503845
Event: International Symposium on Optoelectronic Technology and Application 2018, 2018, Beijing, China
Abstract
Based on phase-sensitive optical time domain reflectometer (φ-OTDR) and phase-generated carrier (PGC) algorithm, a real-time DAS system is built. The maximum sensing length and spatial resolution of the DAS system are 10 km and 6m, respectively. A field test of the DAS system using a single-mode telecommunication fiber cable with a length of 430 m for surface seismic measurement is presented. In the test, a series of conventional 3C-geophones are utilized as a criterion for comparison. Through the raw data absence of processing, preliminary wave, consistent with geophones, are clearly described, which means that the DAS system is capable of surface seismic detection.
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Tuanwei Xu, Shengwen Feng, Jianfen Huang, Yang Yang, Fang Li, Jinming Zhou, and Hesper Yu "Field test of surface seismic measurement with a distributed acoustic sensing system", Proc. SPIE 10849, Fiber Optic Sensing and Optical Communication, 108490D (12 December 2018); https://doi.org/10.1117/12.2503845
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KEYWORDS
Backscatter
Optical fiber cables
Acoustics
Fiber optics sensors
Sensors
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