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Proceedings Paper

Measurement accuracy improvement of Brillouin signal using wavelet denoising method
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Paper Abstract

The signals measured from the Brillouin Optical Time Domain Analysis (BOTDR), distributed optical fiber sensing system is generally prone to contamination by environmental factors, which may degrade the measurement accuracy in field applications, a suitable method of correcting this degradation is desired. In this paper, the wavelet signal processing method is presented to filter out the noise in measured signals and validated with the strain data taken from a smart BOTDA-based cable. The results show that this method can effectively denoise the information of the measured strain of the smart cable and improve the precision of the cable force. The maximum error between the control cable force and the average cable force are 8.8% and 5.1%, respectively, prior to and after noise filtering. This comparison shows that the wavelet denoising method is suitable for the measured signal obtained from the Brillouin optical sensing system.

Paper Details

Date Published: 8 April 2009
PDF: 7 pages
Proc. SPIE 7293, Smart Sensor Phenomena, Technology, Networks, and Systems 2009, 72930B (8 April 2009); doi: 10.1117/12.816688
Show Author Affiliations
Jianping He, Harbin Institute of Technology (China)
Zhi Zhou, Harbin Institute of Technology (China)
Missouri Univ. of Science and Technology (United States)
Genda Chen, Missouri Univ. of Science and Technology (United States)
Jinping Ou, Harbin Institute of Technology (China)
Dalian Univ. of Technology (China)

Published in SPIE Proceedings Vol. 7293:
Smart Sensor Phenomena, Technology, Networks, and Systems 2009
Norbert G. Meyendorf; Kara J. Peters; Wolfgang Ecke, Editor(s)

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