Method of extracting disturbed position in φ-OTDR based on signal relevance evaluation  

作　　者：LI Chengzhi YANG Yang LIU Lijun GAO Fei DU Xuan LIANG Hu 

机构地区：[1]Kunlun Digital Technology Co.,Ltd.,Beijing 102206,China [2]Tianjin Navigation Instruments Research Institute,Tianjin 300131,China

出　　处：《Optoelectronics Letters》2024年第9期513-517,共5页光电子快报（英文版）

基　　金：supported by the Research and Development of Natural Gas Pipeline Network and Station Intelligent Control System by China National Petroleum Corporation Limited (No.2021DJ7304);the National Natural Science Foundation of China (No.62105307)。

摘　　要：A theoretical analysis was conducted on the intrinsic bond between multi-point responses caused by the same single vibration in phase sensitive optical time-domain reflectometer(OTDR). Temporal similarity of signals collected from adjacent sample locations were investigated. Referring to correlation coefficient as well as the relative energy level, a method of extracting disturbed position in φ-OTDR based on signal relevance evaluation is proposed to perform fast screening of massive φ-OTDR raw data to pinpoint those signals with significance.

关 键 词：OTDR SIGNAL disturbed 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]