期刊文献+

Employing the ForWaRD Method to Improve Resolution of Conventional OTDR for Application in SHM

Employing the ForWaRD Method to Improve Resolution of Conventional OTDR for Application in SHM
下载PDF
导出
摘要 As a fiber sensor, optical time domain L reflectometer becomes more and more popular to measure parameters, such as strain and temperature in structural health monitoring (SHM) simultaneously. Since the accuracy of range resolution in optical time domain reflectometer (OTDR) is determined by the pulse width of laser, the range resolution in order of centimeter is achieved by employing of picoseconds lasers which are not commercial. In this paper, to achieve this accuracy with conventional OTDR, Fourier wavelet regularized deconvolution (ForWaRD) method is employed to deconvolve and denoise the detected signal simultaneously. Simulations show that this method improves resolution of conventional OTDR system to the order of several centimeters. As a fiber sensor, optical time domain L reflectometer becomes more and more popular to measure parameters, such as strain and temperature in structural health monitoring (SHM) simultaneously. Since the accuracy of range resolution in optical time domain reflectometer (OTDR) is determined by the pulse width of laser, the range resolution in order of centimeter is achieved by employing of picoseconds lasers which are not commercial. In this paper, to achieve this accuracy with conventional OTDR, Fourier wavelet regularized deconvolution (ForWaRD) method is employed to deconvolve and denoise the detected signal simultaneously. Simulations show that this method improves resolution of conventional OTDR system to the order of several centimeters.
出处 《Journal of Electronic Science and Technology of China》 2010年第1期69-73,共5页 中国电子科技(英文版)
关键词 Fourier wavelet regularizeddeconvolution (ForWaRD) method optical time domainreflectometer (OTDR) structural health monitoring wavelet. Fourier wavelet regularizeddeconvolution (ForWaRD) method, optical time domainreflectometer (OTDR), structural health monitoring,wavelet.
  • 相关文献

参考文献16

  • 1V.Ly(o)ri,"Structural health monitoring with fiber-optic sensors using the pulsed time-of-flight method and other measurement techniques," Ph.D.dissertation,Dep.Elect.Eng,University of Oulu,Finland,2007.
  • 2H.-N.Li,D.-S.Li,and G.-B.Song,"Recent applications of fiber optic sensors to health monitoring in civil engineering," Engineering Structures,vol.26,no.1,pp.1647-1657,2004.
  • 3R.M.Measure,Structural Monitoring with Fiber Optic Technology,1st ed.California,USA:Academic Press,2001,ch.6-7.
  • 4B.Glisic and D.Inaudi,Fiber Optic Methods for Structural Health Monitoring,1st ed.West Sussex,England:John Wiley,2007,ch.2,pp.19-41.
  • 5B.Gholamzadeh and H.Nabovati,"Fiber optic sensors," Proceedings of World Academy of Science,Engineering and Technology,vol.42,pp.297-307,Jun.2008.
  • 6D.R.Anderson,L.Johnson,and F.G.Bell,Troubleshooting Optical-Fiber Networks (Understanding and Using your Optical Time-Domain Reflectometer),2nd ed.California,USA,Elsevier Academic Press,2004,pp.279-290.
  • 7L.Zhang,X.Feng,W.Zhang,and X.Liu,"Improving spatial resolution in fiber Raman distributed temperature sensor by using deconvolution algorithm," Chinese Optics Letters,vol.7,no.7,pp.560-563,2009.
  • 8B.D.Zimmermann,R.O.Claus,D.A.Kapp,and K.A.Murphy,"Fiber-optic sensors using high-resolution optical time domain instrumentation systems," Journal of Lightwave Technology,vol.8,no.9,pp.1273-1277,1990.
  • 9S.Mallat,A Wavelet Tour of Signal Processing,2nd ed.New York,USA:Academic Press,1999,ch.7.
  • 10J.B.lindberg,Wavelets,1st ed.Delhi,India:Overseas Press,1999,ch.3-4.

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部