ZTE

ZTE Communications ›› 2017, Vol. 15 ›› Issue (3): 52-55.doi: 10.3969/j.issn.1673-5188.2017.03.007

• Research Paper • Previous Articles     Next Articles

Practical Pattern Recognition System for Distributed Optical Fiber Intrusion Monitoring Based on Ф-COTDR

CAO Cong, FAN Xinyu, LIU Qingwen, HE Zuyuan   

  1. State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2016-01-01 Online:2017-08-25 Published:2019-12-24
  • About author:CAO Cong(caocong@sjtu.edu.cn) received his B.S. degree in communication engineering from Hohai University, China in 2014; M.S. degree in electrical engineering from Shanghai Jiao Tong University, China in 2017. His research interests are optical fiber sensing technology, signal processing, and pattern recognition.|FAN Xinyu(fan.xinyu@sjtu.edu.cn) received his B.S. and M.S. degrees in applied physics from Shanghai Jiao Tong University, China in 2000 and 2003, respectively; Ph.D. degree in electrical engineering from the University of Tokyo, Japan in 2006. In 2006, he joined NTT Access Network Service Systems Laboratories, Japan, where he has been engaged in research work mainly on optical reflectometry and optical measurement. Since 2012, he joined the Department of Electrical Engineering, Shanghai Jiao Tong University, China, where he is currently a professor. His research interests are optical fiber sensing technology, optical fiber measurement, and fiber-related applications.|LIU Qingwen(liuqingwen@sjtu.edu.cn) received his B.S. and the M.S. degrees in opto-electronics from Tianjin University, China; Ph.D. degree in electronic engineering from the University of Tokyo, Japan. In 2013, he joined the Department of Electrical Engineering, Shanghai Jiao Tong University, where he is currently an associate professor. His research interests are high resolution fiber grating sensors, distributed optical fiber sensors, and photonic sensors.|HE Zuyuan(zuyuanhe@sjtu.edu.cn) received his B.S. and M.S. degrees in electronic engineering from Shanghai Jiao Tong University, China in 1984 and 1987; Ph.D. degree in optoelectronics from the University of Tokyo, Japan in 1999. He joined Nanjing University of Science and Technology, China, as a research associate in 1987, and became a lecturer in 1990. From 1995 to 1996, he was a research fellow with the University of Tokyo, and became a research associate in 1999. In 2001, he joined CIENA Corporation(USA) as a lead engineer. He was with the University of Tokyo as a lecturer in 2003, then became an associate professor in 2005.He is currently a professor of the Center of Excellence in Electrical and Electronic Engineering, University of Tokyo. Since 2012, he has been with Shanghai Jiao Tong University as a Distinguished Professor. His current research interests are optical fiber sensors, optical fiber measurement, and optical information processing.

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Abstract:

At present, the demand for perimeter security system is increasing greatly, especially for such system based on distributed optical fiber sensing. This paper proposes a perimeter security monitoring system based on phase-sensitive coherent optical time domain reflectometry(Ф-COTDR) with the practical pattern recognition function. We use fast Fourier transform (FFT) to exact features from intrusion events and a multi-class classification algorithm derived from support vector machine (SVM) to work as a pattern recognition technique. Five different types of events are classified by using a classification algorithm based on SVM through a three-dimensional feature vector. Moreover, the identification results of the pattern recognition system show that an identification accurate rate of 92.62% on average can be achieved.

Key words: fiber optics sensors, COTDR, distributed vibration sensing, SVM, pattern recognition