1. Y. J. Rao, J. Luo, Z,_L. Ran, J. F. Yue, X. D. Luo, and Z. Zhou, “Long-distance fiber-optic Φ-OTDR intrusion sensing system,” SPIE, 2009, 7503: 1–4.
2. W. T. Lin, S. Q. Lou, and S. Liang, “Fiber-optic distributed vibration sensor for pipeline pre-alarm,” Applied Mechanics and Materials, 2014, 684: 235–239.
3. H. J. Wu, Y. Qian, H. Y. Li, S. K. Xiao, Z. Z. Fu, and Y. J. Rao, “Safety monitoring of long distance power transmission cables and oil pipelines with OTDR technology,” in Proceeding of Laser and Electro-optics (CLEO), San Jose, CA, USA, 2015, pp: 1–2.
4. F. Peng, H. Wu, X. H. Jia, and Z. P. Peng, “Ultra-long high-sensitivity Φ-OTDR for high spatial resolution intrusion detection of pipelines,” Optics Express, 2014, 22(11): 13804–13810.
5. H. J. Wu, X. Y. Li, Z. P. Peng, and Y. J. Rao, “A novel intrusion signal processing method for phase-sensitive optical time-domain reflectometry (Φ-OTDR),” SPIE, 2014, 9157: 9157O-1–9157O-4.