@inproceedings{46fa1e7f216a4571a16bc633c3734615,
title = "Distributed acoustic sensing: How to make the best out of the Rayleigh-backscattered energy?",
abstract = "Coherent fading noise (also known as speckle noise) affects the SNR and sensitivity of Distributed Acoustic Sensing (DAS) systems and makes them random processes of position and time. As in speckle noise, the statistical distribution of DAS SNR is particularly wide and its standard deviation (STD) roughly equals its mean (σSNRSNR 0.89). Trading resolution for SNR may improve the mean SNR but not necessarily narrow its distribution. Here a new approach to achieve both SNR improvement (by sacrificing resolution) and narrowing of the distribution is introduced. The method is based on acquiring high resolution complex backscatter profiles of the sensing fiber, using them to compute complex power profiles of the fiber which retain phase variation information and filtering of the power profiles. The approach is tested via a computer simulation and demonstrates distribution narrowing up to σSNRSNR < 0.2.",
keywords = "Distributed Acoustic Sensing, Optical Fiber Sensing, Optical Reflectometry, Rayleigh Backscattering",
author = "A. Eyal and H. Gabai and I. Shpatz",
note = "Publisher Copyright: {\textcopyright} 2017 SPIE.; 25th International Conference on Optical Fiber Sensors, OFS 2017 ; Conference date: 24-04-2017 Through 28-04-2017",
year = "2017",
doi = "10.1117/12.2272458",
language = "الإنجليزيّة",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Libo Yuan and Youngjoo Chung and Wei Jin and Byoungho Lee and John Canning and Kentaro Nakamura",
booktitle = "25th International Conference on Optical Fiber Sensors",
address = "الولايات المتّحدة",
}