Performance enhancement of noisy distributed acoustic sensor using normalized differential method

Abstract
We experimentally report a normalized differential signal processing technique to improve the signal-To-noise ratio (SNR) of a fiber optic distributed acoustic sensor (DAS), in the time-domain. The introduced method is calibrated through comparing it with the typical differential method when using a noisy DAS system that includes a relatively wide linewidth laser. For this system, the normalized differential method allows measuring the vibration locations, produced by a piezoelectric transducer (PZT) cylinder, with enhanced SNR.

Citation
Ashry, I., Mao, Y., Alias, M. S., Ng, T. K., Hveding, F., Arsalan, M., & Ooi, B. S. (2019). Performance enhancement of noisy distributed acoustic sensor using normalized differential method. Novel Optical Systems, Methods, and Applications XXII. doi:10.1117/12.2523757

Acknowledgements
The authors gratefully acknowledge the financial support provided to this work by the Saudi Aramco under Grant No. RGC/3/3138-01. This work is partially supported by King Abdullah University of Science and Technology (KAUST) baseline funding (BAS/1/1614-01-01), KAUST equipment funding KCR/1/2081-01-01, and GEN/1/6607-01-01.

Publisher
SPIE-Intl Soc Optical Eng

Conference/Event Name
22nd Annual Conference for Novel Optical Systems, Methods, and Applications 2019

DOI
10.1117/12.2523757

Additional Links
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11105/2523757/Performance-enhancement-of-noisy-distributed-acoustic-sensor-using-normalized-differential/10.1117/12.2523757.full

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