Mr. Lilong Ma Profile

Lilong Ma

at Chinese Academy of Sciences

SPIE Involvement:

Author

Publications (9)

Proceedings Article | 19 December 2022 Poster + Paper

Field trial of abyss-class DAS system in South China Sea

Dimin Deng, Tuanwei Xu, Hanyu Zhang, Chunliang Yu, Lilong Ma, Kai Cao, Yinghao Jiang, Fang Li, Shiguo Wu

Proceedings Volume 12321, 123211D (2022) https://doi.org/10.1117/12.2647191

KEYWORDS: Data acquisition, Ocean optics, Time-frequency analysis, Optical fiber cables, Digital recording, Signal processing, Sensing systems, Data processing, Optical sensing

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Proceedings Article | 19 December 2022 Poster + Paper

Nonlinear effects in φ-OTDR system

Yinghao Jiang, Tuanwei Xu, Lilong Ma, Kai Cao, Yaning Xie, Jing Zhang, Dimin Deng, Yuliang Liu

Proceedings Volume 12321, 1232110 (2022) https://doi.org/10.1117/12.2642254

KEYWORDS: Scanning probe microscopy, Modulation, Complex systems, Numerical simulations, Refractive index, Nonlinear optics, Dispersion, Single mode fibers, Sensing systems

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SPIE Journal Paper | 8 March 2021

Mini-distributed acoustic sensing module for submarine application

Tuanwei Xu, Lilong Ma, Kaiheng Yang, Fang Li

OE, Vol. 60, Issue 03, 034106, (March 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.3.034106

KEYWORDS: Acoustics, Spatial resolution, Signal detection, Signal to noise ratio, Demodulation, Data storage, Sensing systems, Data processing, Data acquisition, Backscatter

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Proceedings Article | 8 January 2021 Paper

Field trial of DAS system for seismic data acquisition in lagoon

Lilong Ma, Tuanwei Xu, Kaiheng Yang, Fang Li

Proceedings Volume 11607, 116070H (2021) https://doi.org/10.1117/12.2585437

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Proceedings Article | 10 October 2020 Paper

A novel mini-DAS module for submarine application

Tuanwei Xu, Lilong Ma, Kaiheng Yang, Fang Li

Proceedings Volume 11554, 115541A (2020) https://doi.org/10.1117/12.2573693

KEYWORDS: Spatial resolution, Signal to noise ratio, Acoustics, Single mode fibers, Optical design, Integrated optics, Ocean optics, Interference (communication), Signal detection

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Proceedings Article | 10 October 2020 Paper

An event recognition method for Phi-OTDR based on the Gaussian mixture model/hidden Markov models

Lilong Ma, Tuanwei Xu, Kaiheng Yang, Fang Li

Proceedings Volume 11554, 1155417 (2020) https://doi.org/10.1117/12.2573624

KEYWORDS: Signal detection, Expectation maximization algorithms, Safety, Geophysics, Structured optical fibers, Databases, Interference (communication), Iron, Visualization, Bandpass filters

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Proceedings Article | 18 December 2019 Paper

Theoretical study of optimal gauge length in a helically wound cable for distributed acoustic sensing system

Kaiheng Yang, Tuanwei Xu, Lilong Ma, Fang Li

Proceedings Volume 11340, 1134014 (2019) https://doi.org/10.1117/12.2547716

KEYWORDS: Wavelets, Signal to noise ratio, Acoustics, Sensing systems, Wave propagation, Seismic sensors, Fiber optics sensors, Signal detection, Optical fibers, Spatial resolution

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Proceedings Article | 18 December 2019 Paper

Fiber microphone based on distributed acoustic sensing

Lilong Ma, Tuanwei Xu, Kaiheng Yang, Fang Li, Qingshan Kong

Proceedings Volume 11340, 1134013 (2019) https://doi.org/10.1117/12.2547658

KEYWORDS: Acoustics, Fiber optics, Fiber optics tests, Fiber optics sensors, Laser engraving, Structured optical fibers, Optical components, Geometrical optics, Data acquisition, Optical fabrication

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Proceedings Article | 25 October 2018 Paper

A real-time multichannel distributed acoustic sensing system with phase-sensitive optical domain reflectometry technology

Shengwen Feng, Fang Li, Tuanwei Xu, Lilong Ma, Fei Li

Proceedings Volume 10822, 108220A (2018) https://doi.org/10.1117/12.2503833

KEYWORDS: Remote sensing, Acoustics, Signal processing, Backscatter, Data acquisition, Sensing systems, Reflectometry, Fiber optics sensors, Signal detection

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Showing 5 of 9 publications

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