传感技术学报2017，Vol.30Issue(5)：655-659,5.DOI:10.3969/j.issn.1004-1699.2017.05.004
分布式光纤振动传感系统的多级零频点定位研究
Study on Multiple Null Frequency Location of Distributed Optical Fiber Vibration Sensing System
摘要
Abstract
A novel optimization method of multiple null frequency is proposed,in order to reduce the locating error of linear Sagnac distributed optical fiber vibration sensing system. The traditional locating method is firstly intro-duced. By analyzing the phenomenon of multiple null frequency,the reasons for the increase of positioning error are explained. The optimization method of multiple null frequency is theoretically presented and experimentally verified. The experiment result shows that the locating error is within the range of ±20 m over a total fiber length of 11.769 km,which can meet the need of accurate vibration location.关键词
光纤传感/Sagnac/振动检测/零频点Key words
optical fiber sensing/Sagnac/vibration detection/null frequency分类
信息技术与安全科学引用本文复制引用
王宇,吴瑞东,王东,谭晋隆,刘昕,靳宝全..分布式光纤振动传感系统的多级零频点定位研究[J].传感技术学报,2017,30(5):655-659,5.基金项目
国家自然科学基金项目( 51375327) （ 51375327）
山西省回国留学人员科研项目( 2016-035) （ 2016-035）
山西省煤基重点科技攻关项目( MQ2014-09) （ MQ2014-09）
