Journal of Jishou University(Natural Sciences Edition)

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Harmful Intrusion Detection Method Based on Two-Dimensional K-S Test in Reconfigured Background for Optical Fiber Pre-Warning System

QU Hongquan,WANG Tianqi,BI Fukun,ZHENG Tong   

  1. (School of Electronic Information,North China University of Technology,Beijing 100144,China)
  • Online:2017-01-25 Published:2017-01-17

Abstract:

A harmful intrusion detection method based on two-dimensional K-S test of reconfigured background for optical fiber pre-warning system is proposed. Firstly,ordered statistics cfar (OS-CFAR) detection is used for preliminary examination of the measured signals by Ф-OTDR,and the intrusion signals are selected.Next,the detecting background is reconfigured in the spatial domain for screening out the harmful intrusion signals.A method using two-dimensional K-S test to detect the harmful intrusion signals based on the time and space characteristics of the harmful intrusion signals in the reconfigured background is designed.In real optical fiber intrusion pre-warning system,this method is mainly applied in the conditions with more harmless intrusion such as construction site and highway,and it is effective in harmful signal collection.

Key words: reconfigured background, two-dimensional K-S test, optical fiber pre-warning system

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