Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/80046
Title: Improved location algorithm for multiple intrusions in distributed Sagnac fiber sensing system
Authors: Wang, He
Sun, Qizhen
Li, Xiaolei
Wo, Jianghai
Shum, Perry Ping
Liu, Deming
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2014
Source: Wang, H., Sun, Q., Li, X., Wo, J., Shum, P. P., & Liu, D. (2014). Improved location algorithm for multiple intrusions in distributed Sagnac fiber sensing system. Optics Express, 22(7), 7587-7597.
Series/Report no.: Optics express
Abstract: An improved algorithm named “twice-FFT” for multi-point intrusion location in distributed Sagnac sensing system is proposed and demonstrated. To find the null-frequencies more accurately and efficiently, a second FFT is applied to the frequency spectrum of the phase signal caused by intrusion. After Gaussian fitting and searching the peak response frequency in the twice-FFT curve, the intrusion position could be calculated out stably. Meanwhile, the twice-FFT algorithm could solve the problem of multi-point intrusion location. Based on the experiment with twice-FFT algorithm, the location error less than 100m for single intrusion is achieved at any position along the total length of 41km, and the locating ability for two or three intrusions occurring simultaneously is also demonstrated.
URI: https://hdl.handle.net/10356/80046
http://hdl.handle.net/10220/19522
ISSN: 1094-4087
DOI: 10.1364/OE.22.007587
Rights: © 2014 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint (preprint) with permission of Optical Society of America. The paper can be found at the following official DOI: http://dx.doi.org/10.1364/OE.22.007587.  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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