相位敏感光时域反射计技术在周界安防、铁路安全检测等领域发挥着非常重要的作用。1993年,Taylor提出了这一技术,实现了高灵敏度的分布式光纤振动实时检测。直至2010年,该技术的响应带宽才受到研究人员的关注。Bao课题组采用相干探测技术和滑动平均技术提升信噪比,最大频率响应达到 Phase-sensitive optical time-domain reflectometry technology in the perimeter security, railway safety testing and other fields play a very important role. In 1993, Taylor proposed this technology to achieve highly sensitive distributed optical fiber vibration real-time detection. Until 2010, the response bandwidth of the technology was only the concern of researchers. Bao research group using coherent detection techniques and moving average technology to improve signal to noise ratio, the maximum frequency response