光纤预警系统，基于相位敏感光时域反射计技术的基础上，引入雷达信号系统检测中的OS-CFAR与CA-CFAR相结合方法，对油气管道周围的振动信号进行检测-Optical warning system, based on the phase sensitive optical time domain reflectometer technology, on the basis of the introduction of radar signal in detecting system of OS- CFAR combined with CA- CFAR method, to test the vibration signal of the surrounding oil and gas pipelines