光学技术, 2014, 40 (1): 89, 网络出版: 2014-05-23  

超长距离分布式光纤振动传感器的并发事件信号重构方法

A method of concurrent events signal reconstruction in ultra-long distance distributed optical fiber vibration sensor
作者单位
中国石油天然气管道局油气管道输送安全国家工程实验室, 河北 廊坊 065000
摘要
针对超长距离分布式振动检测传感器在复杂地表振动环境下性能指标下降的问题, 提出了借鉴雷达信号处理技术领域脉冲分选技术的振动信号特征分析提取、分选和融合方案, 实现了对并发振动随机混合信号的同源振动的信号分选和事件的恢复重构。对两起和四起并发事件进行了现场测试, 传感器检测和报警结果准确。为超长距离分布式光纤振动传感器在复杂地表振动环境下的应用提供了可能。
Abstract
A new solution is proposed due to the performance declining of long distance distribution vibration detection sensors used at complex environment. The solution takes advantage of vibration signal feature extraction, separation and fusion technique which is widely adopted in radar signal processing field, and accomplishes individual vibration signal restore during a multi-source noise. The field test results are accurate when the sensors are used to check two and four concurrent events. The solution provides technical support to deploy long distance distribution vibration detection sensors at harsh environment.

张金权, 李香文, 李东, 张欣, 刘素杰, 于立成. 超长距离分布式光纤振动传感器的并发事件信号重构方法[J]. 光学技术, 2014, 40(1): 89. ZHANG Jinquan, LI Xiangwen, LI Dong, ZHANG Xin, LIU Sujie, YU Licheng. A method of concurrent events signal reconstruction in ultra-long distance distributed optical fiber vibration sensor[J]. Optical Technique, 2014, 40(1): 89.

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