.png){kind=icon}
返回
Phase Sensitive Optical Time Domain Reflectometry Based on Compressive Sensing
.png){kind=icon}
PRE
AI
DOI：10.1109/JLT.2019.2938789.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Asub-Nyquist random single-pulse sampling method based compressive sensing technique is proposed firstly to reconstruct signals under test in phase-sensitive optical time domain reflectometry (phi-OTDR). The key information of Rayleigh backscattering curves can be recognized after sparse transformation, which can be successfully reconstructed with far smaller number of measurements by orthogonal matching pursuit algorithm. Unlike the uniform sampling in conventional phi-OTDR system, pulse intervals are randomly modulated to generate a random single-pulse sequence in the proposed method in order to achieve random single-pulse sampling along every sensing point of the fiber. Experimental results verify that pulse sequences with average pulse repetition rate less than 2-kHz can be efficiently utilized to reconstruct an 8-kHz signal under test and obtain its frequency information, as well as to realize the detection of high frequency signals at different locations along the sensing fiber. It is demonstrated that the sampling rate is reduced greatly without any hardware modification compared to that required in the conventional method. This method can break the limits of the traditional Shannon-Nyquist sampling theorem to reconstruct signal, which is of great significance for the sensor performance enhanced in traditional phi-OTDR system.
Keyword:
Compressive sensing
fiber optics sensors
phase-sensitive optical time domain reflectometry
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
4.8
论文数:
1.7W
被引数:
3.8W
机构
引用论文
Effects of lead in the laboratory mouse. Development and social behaviour after lifelong exposure to 12 μM lead in drinking fluid铅对实验室小鼠的影响。终生饮用含12 μM铅的液体后，其发育和社会行为的变化
PREAI
分享收藏Distributed fiber sparse-wideband vibration sensing by sub-Nyquist additive random sampling.png)
OPTICS LETTERS
OAAI
OPTICS LETTERSIF3.3
OAAI分享收藏分享收藏
查看更多内容