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The improved denoising algorithm of acoustic sensor based on linear optical fiber Sagnac interferometer

机译：基于线性光纤SAGNAC干涉仪的声学传感器改进的去噪算法

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摘要

This paper is devoted to the study of an acoustic sensor system based on linear fiber optic Sagnac interferometer. An improved threshold denoising algorithm combined with the wavelet theory is proposed. Furthermore, a hybrid scheme based on the improved algorithm with bandpass filter is explored, and experimental verification of theoretical investigation is accomplished as well. Taking the measured speech signals as examples, the Allan variance of the signals can be reduced, while the class spacing criterion can be increased. It is of great significance for promoting the application of the fiber optic acoustic sensor system.
机译：本文致力于基于线性光纤锯齿干涉仪的声学传感器系统的研究。提出了一种与小波理论相结合的改进的阈值去噪算法。此外，探索了基于带通滤波器改进算法的混合方案，并完成了理论研究的实验验证。以测量的语音信号作为示例，可以减少信号的Allan方差，而类间距标准可以增加。促进光纤声学传感器系统的应用具有重要意义。

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  • 来源
    《Optical fiber technology》 |2020年第12期|102363.1-102363.7|共7页
  • 作者

    Wu Huaming; He Le; Chen Hepu; Xiao Wenbo; Guo Zhuang; Duan Junhong; He Xingdao;

  • 作者单位

    Minist Educ Natl Engn Lab Non Destruct Testing & Optoelect Se Key Lab Nondestruct Testing Nanchang 330063 Jiangxi Peoples R China|Nanchang Hangkong Univ Sch Measuring & Opt Engn Jiangxi Engn Lab Optoelect Testing Technol Nanchang 330063 Jiangxi Peoples R China;

    Huazhong Univ Sci & Technol Sch Opt & Elect Informat Wuhan 430074 Peoples R China;

    Minist Educ Natl Engn Lab Non Destruct Testing & Optoelect Se Key Lab Nondestruct Testing Nanchang 330063 Jiangxi Peoples R China|Nanchang Hangkong Univ Sch Measuring & Opt Engn Jiangxi Engn Lab Optoelect Testing Technol Nanchang 330063 Jiangxi Peoples R China;

    Minist Educ Natl Engn Lab Non Destruct Testing & Optoelect Se Key Lab Nondestruct Testing Nanchang 330063 Jiangxi Peoples R China|Nanchang Hangkong Univ Sch Measuring & Opt Engn Jiangxi Engn Lab Optoelect Testing Technol Nanchang 330063 Jiangxi Peoples R China;

    Minist Educ Natl Engn Lab Non Destruct Testing & Optoelect Se Key Lab Nondestruct Testing Nanchang 330063 Jiangxi Peoples R China|Nanchang Hangkong Univ Sch Measuring & Opt Engn Jiangxi Engn Lab Optoelect Testing Technol Nanchang 330063 Jiangxi Peoples R China;

    Minist Educ Natl Engn Lab Non Destruct Testing & Optoelect Se Key Lab Nondestruct Testing Nanchang 330063 Jiangxi Peoples R China|Nanchang Hangkong Univ Sch Measuring & Opt Engn Jiangxi Engn Lab Optoelect Testing Technol Nanchang 330063 Jiangxi Peoples R China;

    Minist Educ Natl Engn Lab Non Destruct Testing & Optoelect Se Key Lab Nondestruct Testing Nanchang 330063 Jiangxi Peoples R China|Nanchang Hangkong Univ Sch Measuring & Opt Engn Jiangxi Engn Lab Optoelect Testing Technol Nanchang 330063 Jiangxi Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Fiber optic acoustic sensor; Wavelet threshold algorithm; Denoising;

    机译：光纤声学传感器;小波阈值算法;去噪;

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