20 December 2013 Research on fully distributed optical fiber sensing security system localization algorithm
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Proceedings Volume 9044, 2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 90441K (2013) https://doi.org/10.1117/12.2038133
Event: International Conference on Optical Instruments and Technology (OIT2013), 2013, Beijing, China
Abstract
A new fully distributed optical fiber sensing and location technology based on the Mach-Zehnder interferometers is studied. In this security system, a new climbing point locating algorithm based on short-time average zero-crossing rate is presented. By calculating the zero-crossing rates of the multiple grouped data separately, it not only utilizes the advantages of the frequency analysis method to determine the most effective data group more accurately, but also meets the requirement of the real-time monitoring system. Supplemented with short-term energy calculation group signal, the most effective data group can be quickly picked out. Finally, the accurate location of the climbing point can be effectively achieved through the cross-correlation localization algorithm. The experimental results show that the proposed algorithm can realize the accurate location of the climbing point and meanwhile the outside interference noise of the non-climbing behavior can be effectively filtered out.
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Xu Wu, Jiacheng Hou, Kun Liu, Tiegen Liu, "Research on fully distributed optical fiber sensing security system localization algorithm", Proc. SPIE 9044, 2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 90441K (20 December 2013); doi: 10.1117/12.2038133; https://doi.org/10.1117/12.2038133
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