Dr. Ranran Ji Profile

Dr. Ranran Ji

at The 715th Research Institute of China Shipbuilding

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Publications (3)

Proceedings Article | 27 November 2023 Poster + Paper

Study on the frequency band energy distribution of pipeline broken wire signal based on φ-OTDR system

Fan Yang, Dongming Li, Lijun Wan, Ranran Ji

Proceedings Volume 12771, 127711H (2023) https://doi.org/10.1117/12.2687172

KEYWORDS: Wavelet packet decomposition, Wavelets, Vibration, Signal processing, Pipes, Sampling rates, Fiber optics sensors, Signal analyzers, Corrosion, Acoustics

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Proceedings Article | 19 December 2022 Poster + Paper

The application of GA-VMD denoising algorithm in [phi]-OTDR system

Fan Yang, Dongming Li, Lijun Wan, Ranran Ji, Xiaodi Wu

Proceedings Volume 12321, 1232117 (2022) https://doi.org/10.1117/12.2643944

KEYWORDS: Denoising, Signal processing, Fiber optics, Signal to noise ratio, Reconstruction algorithms, Optimization (mathematics), Genetic algorithms, Feature extraction, Signal detection

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Proceedings Article | 19 December 2022 Poster + Paper

Application of distributed optical fiber acoustic sensing system in pre-stressed concrete cylinder pipe (PCCP) pipeline structure health monitoring

Ranran Ji, Dongming Li, Lijun Wan, Fan Yang

Proceedings Volume 12321, 1232112 (2022) https://doi.org/10.1117/12.2643215

KEYWORDS: Optical fibers, Light scattering, Signal detection, Rayleigh scattering, Sensing systems, Raman scattering

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