A Denoising Method Based on Kernel Principal Component Analysis for Airborne Time‐Domain Electromagnetic Data
作者： CHEN Bin , LU Cong‐De , LIU Guang‐Ding
DOI: 10.1002/CJG2.20087
关键词: Kernel principal component analysis 、 Pattern recognition 、 Data quality 、 Artificial intelligence 、 Inversion (meteorology) 、 Principal component analysis 、 Radio atmospheric 、 Software 、 Statistics 、 Time domain 、 Computer science 、 Noise reduction
摘要: Airborne time-domain electromagnetic (ATEM) data usually contain natural and cultural noise, which can lower quality, influence inversion accuracy or even lead to incorrect interpretation if it is not removed from using an appropriate filter. To solve this problem, work suggests a denosing method based on kernel principal component analysis. Firstly, extracts the stacked decay curves. Then useful signals, are associated with subsurface media, noise separated energy ratio. Finally, these signals used perform reconstruction. This only remove such as spikes oscillation caused by sferies, but also effectively suppress noise. Using AeroTEM software, real ATEM helicopter survey processed separately. Comparison of results shows that denoising effect suggested paper superior software.
sci-hub.se 参考文章(16)
Brian R. Spies, Local noise prediction filtering for central induction transient electromagnetic sounding Geophysics. ,vol. 53, pp. 1068- 1079 ,(1988) , 10.1190/1.1442543
László Szarka, Geophysical aspects of man-made electromagnetic noise in the earth—A review Surveys in Geophysics. ,vol. 9, pp. 287- 318 ,(1988) , 10.1007/BF01901627
Flemming Jørgensen, Peter B.E. Sandersen, Esben Auken, Imaging buried Quaternary valleys using the transient electromagnetic method Journal of Applied Geophysics. ,vol. 53, pp. 199- 213 ,(2003) , 10.1016/J.JAPPGEO.2003.08.016
Abderrezak Bouchedda, Michel Chouteau, Pierre Keating, Richard Smith, Sferics noise reduction in time-domain electromagnetic systems: application to MegaTEMII signal enhancement Exploration Geophysics. ,vol. 41, pp. 225- 239 ,(2010) , 10.1071/EG09007
N. Aronszajn, Theory of Reproducing Kernels. Transactions of the American Mathematical Society. ,vol. 68, pp. 337- 404 ,(1950) , 10.1090/S0002-9947-1950-0051437-7
G. Buselli, J.P. Pik, H.S. Hwang, AEM noise reduction with remote referencing Exploration Geophysics. ,vol. 29, pp. 71- 76 ,(1998) , 10.1071/EG998071
K. G. McCracken, J. P. Pik, R. W. Harris, Noise in EM exploration systems Exploration Geophysics. ,vol. 15, pp. 169- 174 ,(1984) , 10.1071/EG984169
J. P. Cull, Signal processing concepts for airborne SIROTEM data Exploration Geophysics. ,vol. 22, pp. 97- 100 ,(1991) , 10.1071/EG991097
G. Buselli, Murray Cameron, Robust statistical methods for reducing sferics noise contaminating transient electromagnetic measurements Geophysics. ,vol. 61, pp. 1633- 1646 ,(1996) , 10.1190/1.1444082
K. G. McCracken, M. L. Oristaglio, G. W. Hohmann, Minimization of noise in electromagnetic exploration systems Geophysics. ,vol. 51, pp. 819- 832 ,(1986) , 10.1190/1.1442134