Mathematical analysis of marine pipeline leakage monitoring system based on coherent OTDR with improved sensor length and sampling frequency

International Scientific Seminars on "Fundamental and Applied Problems of Photonics and Condensed Matter Physics"

Pnev, A.B.^1 ; Zhirnov, A.A.^1 ; Stepanov, K.V.^1 ; Nesterov, E.T.^1 ; Shelestov, D.A.^1 ; Karasik, V.E.^1

Bauman Moscow State Technical University, 2-nd Baumanskaya st. 5, Moscow

105005, Russia^1

关键词: Coherent optical;    Fiber Sensor;    Marine pipeline;    Mathematical analysis;    Noise influence;    Sampling frequencies;    Sensitive area;    Sub-sea pipelines;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/584/1/012016/pdf
DOI  :  10.1088/1742-6596/584/1/012016

来源: IOP

【 摘 要 】

A system based on coherent optical time domain reflectometry (OTDR) for subsea pipeline monitoring is described. The fiber sensor length is increased using erbium-doped fiber amplifier (EDFA) cascades. The sampling frequency is increased by dividing the fiber sensor into separate sensitive areas, with parallel scanning. The calculation of the erbium amplifier cascade spontaneous noise influence on the signal-to-noise ratio (SNR) is carried out.