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

被引：4
|
作者：
Shi, Yi [1 ]
Feng, Hao [1 ]
Huang, Yuqiu [1 ]
Zeng, Zhoumo [1 ]
机构：
[1] Tianjin Univ, State Key Lab Precis Measurement Technol & Instru, 92 WeiJin Rd, Tianjin 300072, Peoples R China
来源：
OPTICAL ENGINEERING | 2016年 / 55卷 / 09期
基金：
中国国家自然科学基金;
关键词：
phase-sensitive optical time domain reflectometry; correlation dimension; vibration sensor; INTRUSION SENSOR SYSTEM; OTDR; AMPLIFICATION;
D O I：
10.1117/1.OE.55.9.091402
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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 phasesensitive 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. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE).
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页数：5
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