An Improved Method of Wavelet Threshold De-noising Applied to FBG Demodulation
In the demodulation process of Fiber Bragg Grating（FBG）sensing system,the accuracy of the system is affected by the noise seriously.In order to improve the measurement accuracy of the system,denoising is an indispensable part in the demodulation.In this paper,we construct a new threshold function wi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
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《光通信研究》编辑部
2016-01-01
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| Series: | Guangtongxin yanjiu |
| Subjects: | |
| Online Access: | http://www.gtxyj.com.cn/thesisDetails#10.13756/j.gtxyj.2016.02.013 |
| _version_ | 1827258963610042368 |
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| author | JIANG Hong SU Yang LI Jin CHENG Xin-bei |
| author_facet | JIANG Hong SU Yang LI Jin CHENG Xin-bei |
| author_sort | JIANG Hong |
| collection | DOAJ |
| description | In the demodulation process of Fiber Bragg Grating（FBG）sensing system,the accuracy of the system is affected by the noise seriously.In order to improve the measurement accuracy of the system,denoising is an indispensable part in the demodulation.In this paper,we construct a new threshold function with much better denoising performance based on typical wavelet threshold denoising algorithm with soft and hard threshold function,and threshold functions in the existing literature.Through the de-noising experiment for the noisy FBG reflected signal,the result shows that the proposed threshold function can increase the average signal-to-noise ratio by 3<sup>5</sup>dB,and reduce the root mean square error by 0.1<sup>0</sup>.3,when comparing with the typical soft and hard threshold function.Finally,we apply the proposed method to the FBG temperature sensing system to demonstrate the feasibility of the method.The experiment results show that the demodulation accuracy is less than5 pm,which meet the accuracy requirement of the FBG sensing system. |
| first_indexed | 2024-04-10T19:13:02Z |
| format | Article |
| id | doaj.art-202797dc317d43bd97e0deaa307456b5 |
| institution | Directory Open Access Journal |
| issn | 1005-8788 |
| language | zho |
| last_indexed | 2025-03-22T02:19:02Z |
| publishDate | 2016-01-01 |
| publisher | 《光通信研究》编辑部 |
| record_format | Article |
| series | Guangtongxin yanjiu |
| spelling | doaj.art-202797dc317d43bd97e0deaa307456b52024-05-06T09:49:58Zzho《光通信研究》编辑部Guangtongxin yanjiu1005-87882016-01-01404327987399An Improved Method of Wavelet Threshold De-noising Applied to FBG DemodulationJIANG HongSU YangLI JinCHENG Xin-beiIn the demodulation process of Fiber Bragg Grating（FBG）sensing system,the accuracy of the system is affected by the noise seriously.In order to improve the measurement accuracy of the system,denoising is an indispensable part in the demodulation.In this paper,we construct a new threshold function with much better denoising performance based on typical wavelet threshold denoising algorithm with soft and hard threshold function,and threshold functions in the existing literature.Through the de-noising experiment for the noisy FBG reflected signal,the result shows that the proposed threshold function can increase the average signal-to-noise ratio by 3<sup>5</sup>dB,and reduce the root mean square error by 0.1<sup>0</sup>.3,when comparing with the typical soft and hard threshold function.Finally,we apply the proposed method to the FBG temperature sensing system to demonstrate the feasibility of the method.The experiment results show that the demodulation accuracy is less than5 pm,which meet the accuracy requirement of the FBG sensing system.http://www.gtxyj.com.cn/thesisDetails#10.13756/j.gtxyj.2016.02.013FBG signal;wavelet denoising;threshold function;FBG sensing system |
| spellingShingle | JIANG Hong SU Yang LI Jin CHENG Xin-bei An Improved Method of Wavelet Threshold De-noising Applied to FBG Demodulation Guangtongxin yanjiu FBG signal;wavelet denoising;threshold function;FBG sensing system |
| title | An Improved Method of Wavelet Threshold De-noising Applied to FBG Demodulation |
| title_full | An Improved Method of Wavelet Threshold De-noising Applied to FBG Demodulation |
| title_fullStr | An Improved Method of Wavelet Threshold De-noising Applied to FBG Demodulation |
| title_full_unstemmed | An Improved Method of Wavelet Threshold De-noising Applied to FBG Demodulation |
| title_short | An Improved Method of Wavelet Threshold De-noising Applied to FBG Demodulation |
| title_sort | improved method of wavelet threshold de noising applied to fbg demodulation |
| topic | FBG signal;wavelet denoising;threshold function;FBG sensing system |
| url | http://www.gtxyj.com.cn/thesisDetails#10.13756/j.gtxyj.2016.02.013 |
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