Detection and Quantization Technique of Optical Distributed Acoustic Coupling Based on φ-OTDR
The detection of multiple acoustic disturbances by optical fiber is a hot research topic in the field of optical fiber sensing. This paper considers adopting an optical distributed acoustic sensing (DAS) system to detect multiple acoustic disturbances, proposes a new approach to processing the DAS s...
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| Veröffentlicht in: | Shanghai jiao tong da xue xue bao 2020-04, Vol.25 (2), p.208-213 |
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| creator | Zhang, Yang Xu, Hongxuan Zhu, Xianxun Zhao, Zhiyang Zuo, Jiancun |
| description | The detection of multiple acoustic disturbances by optical fiber is a hot research topic in the field of optical fiber sensing. This paper considers adopting an optical distributed acoustic sensing (DAS) system to detect multiple acoustic disturbances, proposes a new approach to processing the DAS signal based on time-space average in frequency domain, and overcomes the randomness of DAS time domain signal. Finally, it obtains a functional model of single-frequency (50–1 000 Hz) sound pressure level and DAS signal intensity, and also the cut-off frequency of acoustic disturbance is detected by DAS system. |
| doi_str_mv | 10.1007/s12204-020-2161-8 |
| format | Article |
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| identifier | ISSN: 1007-1172 |
| ispartof | Shanghai jiao tong da xue xue bao, 2020-04, Vol.25 (2), p.208-213 |
| issn | 1007-1172 1995-8188 |
| language | eng |
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| source | SpringerNature Journals |
| subjects | Acoustic coupling Acoustics Architecture Computer Science Disturbances Electrical Engineering Engineering Information processing Life Sciences Materials Science Optical fibers Quantitative analysis Signal processing Sound pressure |
| title | Detection and Quantization Technique of Optical Distributed Acoustic Coupling Based on φ-OTDR |
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