Application of empirical mode decomposition in atmospheric echo processing of lidar
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Key Labaratory of Electronic Restriction Technology of Anhui, Electronic Engineering Institute, Hefei 230037, China
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Corresponding author:
HU Yi-hua, yh_hu@163.com
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Received Date:
2007-07-27
Accepted Date:
2007-09-17
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Abstract
In order to improve the efficiency of atmospheric signal processing of lidar,the theory of empirical mode decomposition was analyzed and the application of empirical mode decomposition in real-time processing of atmospheric echo signal was studied.The reconstruction signal after empirical mode decomposition processing is close to the signal after 100 singnals average and their correlation coefficient is 0.99 and the processing time can be decreased to 1%,which may meet the requisition of real-time processing and can restrain the interference of some thin cloud.This result will give help to real-time processing of lidar echo.
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References
|
[1]
|
YAN J X,GONG Sh Sh,LIU Zh Sh.Lidar of environmental survey[M].Beijing:Science Press,2001:5-10(in Chinese). |
|
[2]
|
ZENG Q Y.Faint signal detection[M].Hangzhou:Zhejiang University Press,1994:115-118(in Chinese). |
|
[3]
|
YANG Ch H,SUN D S,LI H J.Photon counting applied to imaging lidar[J].Infrared and Laser Engineering,2005,34(5):517-520(in Chinese). |
|
[4]
|
CHEN Y,WANG Y L,ZHOU D F,et al.Faint signal processing of lidar based on wavelet multi-resolution analysis[J].Laser Technology,2005,29(3):278-283(in Chinese). |
|
[5]
|
HUANG N E,ZHENG S,STEVEN R L,et al.The empirical mode decomposition and the hilbert spectrum for nonlinear and non-stationary time series analysis[C]//Proceedings of the Royal Society of London.London:Royal Society Publishing,1998:903-995. |
|
[6]
|
CHEN F L,WU X L.Recovery of signal from transient scattered response contaminated by gaussian white noise based on EMD method[J].Acta Electronica Sinica,2004,32(3):496-498(in Chinese). |
|
[7]
|
SUN J Q.Laser atmospheric detection[M].Beijing:Science Press,1986:66-70(in Chinese). |
|
[8]
|
JAMES S.Micro pulse lidar[J].IEEE Transactions on Geosciences and Remote Sensing,1993,31(1):48-55. |
|
[9]
|
HONG G L,ZHANG Y Ch,HU Sh X.Near infrared micro pulse lidar of profiling atmospheric CO2[J].Journal of Infrared and Millimeter Waves,2004,23(5):384-388(in Chinese). |
|
[10]
|
CHU G F,SUN F X,DAI Y J.The method of photon count and its application on the micro-pulse laser range-finding[J].Journal of Optoelectronics·Laser,2003,20(5):618-622(in Chinese). |
|
[11]
|
ZHONG Zh Q,ZHOU J.Simulated signal calculation for micro pulse lidar[J].Chinese Journal of Quantum Electronics,2003,20(5):618-622(in Chinese). |
|
[12]
|
ZHOU X L,SUN D S,ZHONG Zh Q.Subsection denoise of lidar signal by multi-scale EMD[J].Infrared and Laser Engineering,2006,35(sl):477-482(in Chinese). |
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