Performance enhancement of noisy distributed acoustic sensor using normalized differential method

Islam Ashry; Yuan Mao; Mohd Sharizal Alias; Tien Khee Ng; Frode Hveding; Muhammad Arsalan; Boon S. Ooi

doi:10.1117/12.2523757

9 September 2019 Performance enhancement of noisy distributed acoustic sensor using normalized differential method

Islam Ashry, Yuan Mao, Mohd Sharizal Alias, Tien Khee Ng, Frode Hveding, Muhammad Arsalan, Boon S. Ooi

Proceedings Volume 11105, Novel Optical Systems, Methods, and Applications XXII; 1110507 (2019) https://doi.org/10.1117/12.2523757
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

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.

Conference Presentation

Citation Download Citation

Islam Ashry, Yuan Mao, Mohd Sharizal Alias, Tien Khee Ng, Frode Hveding, Muhammad Arsalan, and Boon S. Ooi "Performance enhancement of noisy distributed acoustic sensor using normalized differential method", Proc. SPIE 11105, Novel Optical Systems, Methods, and Applications XXII, 1110507 (9 September 2019); https://doi.org/10.1117/12.2523757

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