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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.
Original languageEnglish (US)
Title of host publicationNovel Optical Systems, Methods, and Applications XXII
PublisherSPIE
ISBN (Print)9781510629035
DOIs
StatePublished - Sep 9 2019

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