用于超高频振动传感的混沌伪随机采样相敏OTDR

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-09-25 DOI:10.1016/j.optlastec.2025.113973

Yu Wang , Huirong Hu , Junhong Wang , Pengfei Wang , Qing Bai , Xin Liu , Baoquan Jin

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引用次数: 0

摘要

为了提高相敏光学时域反射计（Φ-OTDR）系统的上频响应极限，提出了一种混沌伪随机采样压缩感知重构方案。分析了混沌伪随机采样序列的分布特性，并用logistic映射对其进行了优化。采用基于分块算法策略的压缩感知重构算法对高频相位信号进行重构。实验结果表明，该方案可以在5公里传感光纤上准确还原300 kHz高频正弦信号和多频复合信号，性能水平达到初始上频响应极限的30倍。此外，数据需求减少到奈奎斯特采样率的2.2%。因此，这种混沌伪随机采样压缩感知重构方案有效地提高了Φ-OTDR系统的频响性能。

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Chaotic pseudorandom sampling phase-sensitive OTDR for ultra-high frequency vibration sensing

A chaotic pseudorandom sampling compressed sensing reconstruction scheme is proposed to enhance the upper-frequency response limit of the phase-sensitive optical time-domain reflectometry (Φ-OTDR) system. The distribution characteristics of the chaotic pseudorandom sampling sequence is analyzed and optimized with logistic mapping. The compressed sensing reconstruction algorithm utilizing a chunking algorithmic strategy is employed to reconstruct high-frequency phase signals. Experimental results demonstrate that the scheme can accurately restore 300 kHz high-frequency sinusoidal signals and multi-frequency composite signals over a 5 km sensing fiber, achieving a performance level 30 times the initial upper-frequency response limit. Moreover, data requirements are reduced to only 2.2 % of the Nyquist sampling rate. Therefore, this chaotic pseudorandom sampling compressed sensing reconstruction scheme effectively enhances the frequency response performance of the Φ-OTDR system.

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems