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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。
Aiming at the problem that the performance of ultra-long-distance distributed vibration detection sensor is degraded under complex surface vibration conditions, a scheme of extracting, sorting and integrating the vibration signals of pulsed sorting technology based on radar signal processing technology is proposed. Signal Sorting of Homothetic Vibrations and Reconstruction of Events Recorded by Vibrating Random Mixed Signal. On-site testing of two and four concurrent events resulted in accurate sensor test and alarm results. It is possible to use ultra-long distance distributed optical fiber vibration sensor in complex surface vibration environment.