【摘要】 布里渊分布式光纤传感技术可以实现分布式、长距离、高精度的温度或应变传感，在大型基础设施安全监测方面具有广泛的应用前景。传统的布里渊光时域分析技术（BOTDA）和布里渊光时域反射技术（BOTDR）由于需要通过扫频测量布里渊增益谱进而获得布里渊频移，测量过程较为耗时，难以胜任动态应变的测量。针对这一问题，学者们提出了多种解决技术方案并取得了很好的研究成果。本文对光时域布里渊分布式光纤动态应变传感技术的研究进展进行了详细综述，包括斜坡辅助布里渊光时域分析技术（SA-BOTDA）和布里渊光时域反射技术（SA-BOTDR）、捷变频BOTDA/R技术、啁啾链BOTDA/R技术和光频梳BOTDA技术等。更多还原

【Abstract】 Brillouin distributed fiber sensing technology can realize distributed, long-distance, high precision temperature,or strain sensing and has a wide range of applications in large-scale infrastructure security monitoring. Traditional Brillouin optical time domain analysis and reflectometry(BOTDA/R) must measure Brillouin’s gain spectrum by sweeping frequency to obtain Brillouin’s frequency shift. The measurement process is time-consuming, and it is difficult to measure the dynamic strain. To solve this problem, researchers have proposed various technical schemes and made significant progress. This paper summarizes the recent progress of the time-domain Brillouin optical distributed fiber dynamic strain sensing system, including the BOTDA/R dynamic sensing system based on the slope-assisted method as well as the frequency-agile, optical chirp chain, and optical frequency comb techniques.更多还原