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

IF 0.4 4区工程技术 Q4 ENGINEERING, MULTIDISCIPLINARY

Instruments and Experimental Techniques Pub Date : 2023-09-14 DOI:10.1134/S0020441223050044

F. L. Barkov, Yu. A. Konstantinov

引用次数: 1

Abstract

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.

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一种改进的后向相关法精确提取布里渊频移

提出了一种在给定布里渊增益谱后处理中提取布里渊频移的改进方法。对该方法的改进使其适用范围扩大到信噪比小于0 dB的噪声谱区域。改进后的方法可以成功地应用于布里渊散射原理的分布式光纤传感器，特别是长距离传感线路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Instruments and Experimental Techniques 工程技术-工程：综合

CiteScore

1.20

自引率

33.30%

发文量

113

审稿时长

4-8 weeks

期刊介绍： Instruments and Experimental Techniques is an international peer reviewed journal that publishes reviews describing advanced methods for physical measurements and techniques and original articles that present techniques for physical measurements, principles of operation, design, methods of application, and analysis of the operation of physical instruments used in all fields of experimental physics and when conducting measurements using physical methods and instruments in astronomy, natural sciences, chemistry, biology, medicine, and ecology.