In this paper, based on the compressed sensing theory and the orthogonal matching pursuit algorithm, we have designed a data compression scheme, taking the Space-Temporal graph, time domain curve, and its time-frequency spectrum of phase-sensitive optical time-domain reflectometer as the target ...
基于多域压缩感知的phi-OTDR信号测量和抑噪方法.pdf,本发明公开了一种基于多域压缩感知的phi‑OTDR信号测量和抑噪方法,包括:使用数据采集卡接收多个探测脉冲光,利用压缩感知原理在多个域上对不同频率的探测脉冲光进行随机亚采样,构建满足等距约束性条件的二维观测矩阵
Phi-OTDR信号采集系统软件是由成都声听科技有限责任公司著作的软件著作,该软件著作登记号为:2024SR0052009,属于分类,想要查询更多关于Phi-OTDR信号采集系统软件著作的著作权信息就到天眼查官网!
基于相位敏感的光时域反射计(Phi-OTDR)的光纤传感系统具有灵敏度高,探测距离长和定位精度高等特点,在大型设施健康监测,周界安防,管道防护,海洋工程等方面具有广阔的应用前景.传统Phi-OTDR系统中,空间分辨率主要由信号光的脉宽决定,系统传感距离与空间分辨率之间存在矛盾.采用线性啁啾脉冲作为输入光信号的Phi-OTDR传感系统能...
phi-OTDR预警系统实验机端 作品详情 包含一个界面和一个后台 界面采用pyqt5编写 读取实验机产生的二进制txt数据文件, 利用numpy处理数据并产生预警信息, 通过互联网将预警信息传送到客户机
This dataset contains six types of Phi-OTDR events, including background noises (2946 samples, Fig (a)), digging (2512 samples, Fig (b)), knocking (2530 samples, Fig (c)), watering (2253, Fig (d)), shaking (2728, Fig (e)) and walking (2450, Fig (f)), in a total of 15,41...
摘要:在相位光时域反射(Phi-OTDR)技术分布式振动信号的处理中,为了保证时间轴上的信噪比和长度轴上的作用域同时得到提升,同时兼顾保留信号特征和时域快速处理2个条件,采用了"信噪分类、信号保留、噪声归零"的方式进行信号处理.在信噪分类的过程中,首次提出利用改进的实时编码信号处理算法,在时域上对Phi-OTDR分布式振动...
The characteristics of interference fading in a phase sensitive optical time domain reflectometer (φ-OTDR) system with a three optical frequency source are described in this paper. It is observed in the experiments that the fading appearance is quite stable over 400 different pulse scans for each...
A distributed optical fiber intrusion detection system, based on the combination of the phase-sensitive optical time-domain reflectometer (φ-OTDR) and the polarization optical time domain reflectometer (POTDR), is proposed and demonstrated. The wavelet transform method and peak-enhancing signal processin...
Long-distance fiber-optic Φ-OTDR intrusion sensing system Yun-Jiang Rao,1, 2* Jun Luo,1 Zeng-Ling Ran,1 Jian-Feng Yue,1 Xiao-Dong Luo,1 Zhi Zhou3 1. Key Lab of Broadband Optical Fiber Transmission & Communication Networks Technology (Ministry of Education),University of Electronic...