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Frequency Response Range Extended Slope-Assisted BOTDA Using Randomized Sampling
DOI:10.1109/JLT.2026.3651553.png)
摘要
En 中文
我们提出并演示了一种基于随机采样的斜率辅助布里渊光时域分析(SA-BOTDA)传感器,其频率响应范围得到扩展。通过采用可变采样间隔和非均匀离散傅里叶变换(NUDFT),所提出的方案克服了传统系统中固有的脉冲往返时间限制,实现了超过奈奎斯特频率范围的振动检测。在概念验证实验中,使用随机采样和均匀采样均成功检测到高达3.5 kHz的振动信号,证实了在5 kHz奈奎斯特频率范围内进行振动检测的可行性。为验证频率范围的扩展,所提出的方法成功检测到高达400 kHz的模拟振动信号,这远超传统方法5 kHz的理论极限。所提出的方法在传感范围和频率响应之间实现了权衡,为在有限频率响应范围场景下的超高频振动传感提供了一种简单解决方案。
Keyword:
Brillouin scattering
distributed optical fiber sensors
randomized sampling
signal processing
期刊
IF:
4.8
论文数:
1.7W
被引数:
3.8W
机构
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