Special Section on Instrumentation and Techniques for Geometrical and Mechanical Quantity Measurement

Correlation dimension locating method for phase-sensitive optical time domain reflectometry

[+] Author Affiliations
Yi Shi, Hao Feng, Yuqiu Huang, Zhoumo Zeng

Tianjin University, State Key Laboratory for Precision Measurement Technology and Instrument, 92 WeiJin Road, Tianjin 300072, China

Opt. Eng. 55(9), 091402 (Mar 07, 2016). doi:10.1117/1.OE.55.9.091402
History: Received December 22, 2015; Accepted February 16, 2016
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Abstract.  The coherent fading problem may lead to location error and bad location repeatability in the conventional moving differential method (MDM). A locating method based on the correlation dimension (CDM) in phase-sensitive optical time domain reflectometry is proposed. The CDM of backscattered traces is sensitive to weak vibration and immune to coherent fading, which is suitable to find out the vibration response section and then to calculate the location of the vibration source. Experimental results indicate that, compared with MDM, the standard deviation of location results, which represents location repeatability, can be improved from 25 to 2.1 m through CDM.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Yi Shi ; Hao Feng ; Yuqiu Huang and Zhoumo Zeng
"Correlation dimension locating method for phase-sensitive optical time domain reflectometry", Opt. Eng. 55(9), 091402 (Mar 07, 2016). ; http://dx.doi.org/10.1117/1.OE.55.9.091402


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