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Title: Segregating the true perturbation position from ghost energy points region in phi-OTDR systems
Authors: Adeel, M 
Tejedor, J
Macias-Guarasa, J
Shang, C 
Lu, C 
Issue Date: 2020
Source: Optics express, 3 Feb. 2020, v. 28, no. 3, p. 2699-2713
Abstract: phi-OTDR perturbation detection applications demand optimal precision of the perturbation location. Strategies for improving both signal-to-noise (SNR) and precision of the perturbation location in a laboratory environment may fail when applying to a very long fiber under test (FUT) in real-field environments. With this deployment, meaningful energy points representing the response of a certain perturbation can be located at random locations of the fiber other than the original location of the perturbation. These random locations are referred to as the ghost energy points that confuse the system to mistakenly consider the location of these points as the original perturbation location. We present in this paper a novel space-time scanning (ST-scan) method that segregates the ghost energy point locations from those of the real perturbation so that the original perturbation location estimation is improved.
Publisher: Optical Society of America
Journal: Optics express 
EISSN: 1094-4087
DOI: 10.1364/OE.378365
Rights: © 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement (
Journal © 2020
The Author(s) agree that all copies of the Work made under any of the above rights shall prominently include the following copyright notice: “© 2020 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.”
The following publication Muhammad Adeel, Javier Tejedor, Javier Macias-Guarasa, Chao Shang, and Chao Lu, "Segregating the true perturbation position from ghost energy points region in ϕ-OTDR systems," Opt. Express 28, 2699-2713 (2020) is available at
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