A Modification of the Backward Correlation Method for the Brillouin Frequency Shift Accurate Extraction

被引：1
|
作者：
Barkov, F. L. [1 ]
Konstantinov, Yu. A. [1 ]
机构：
[1] Russian Acad Sci, Perm Fed Res Ctr, Ural Branch, Perm 614990, Russia
来源：
INSTRUMENTS AND EXPERIMENTAL TECHNIQUES | 2023年 / 66卷 / 05期
关键词：
TEMPERATURE; PERFORMANCE; BOTDA;
D O I：
10.1134/S0020441223050044
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An improved method for extracting the Brillouin frequency shift in postprocessing of a given Brillouin gain spectrum is presented. Modification of the method made it possible to expand the boundaries of its applicability to the region of noisy spectra with a signal-to-noise ratio (SNR) below 0 dB. The modified method can be successfully used in distributed fiber-optic sensors operating on the Brillouin scattering principle, especially in long-distance sensing lines.
引用
收藏
页码：753 / 760
页数：8
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