Improved location algorithm for multiple intrusions in distributed Sagnac fiber sensing system

• Main Authors: Wang, He, Sun, Qizhen, Li, Xiaolei, Wo, Jianghai, Shum, Perry Ping, Liu, Deming
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2014
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/80046; http://hdl.handle.net/10220/19522
• Institution: Nanyang Technological University

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...