The Hilbert-Huang transform（HHT） is a new analysis method suitable for nonlinear and non-stationary signals.It is very appropriate to seismic signals because they show both non-stationary and nonlinear characteristi...The Hilbert-Huang transform（HHT） is a new analysis method suitable for nonlinear and non-stationary signals.It is very appropriate to seismic signals because they show both non-stationary and nonlinear characteristics.We first introduce the realization of HHT empirical mode decomposition（EMD） and then comparatively analyze three instantaneous frequency algorithms based on intrinsic mode functions（IMF） resulting from EMD,of which one uses the average instantaneous frequency of two sample intervals having higher resolution which can determine that the signal frequency components change with time.The method is used with 3-D poststack migrated seismic data of marine carbonate strata in southern China to effectively extract the three instantaneous attributes.The instantaneous phase attributes of the second intrinsic mode functions（IMF2） better describe the reef facies of the platform margin and the IMF2 instantaneous frequency attribute has better zoning.Combining analysis of the three IMF2 instantaneous seismic attributes and drilling data can identify the distribution of sedimentary facies well.展开更多
Y99-61821-1017 2001884直流区域配电系统中功率电子变换器控制用的定制DSP 板=The application of a customized DSP board forthe control of power electronic converters in a DC zonalelectric distribution system[会,英]/Ciezki,...Y99-61821-1017 2001884直流区域配电系统中功率电子变换器控制用的定制DSP 板=The application of a customized DSP board forthe control of power electronic converters in a DC zonalelectric distribution system[会,英]/Ciezki,J.G.&Ashton,R.W.//1998 32nd Asilomar Conference,Vol.2.—1017～1021(PC)Y99-61821-1406 2001885功率系统瞬变检测与分析用的子波=Wavelets for de-rection and analysis of power system transients[会,英]/Reddy,V.M.& Rao,S.S.//1998 32nd AsilomarConference,Vol.2.—1406～1410(PC)介绍了功率系统瞬变检测与分析用一种有效工具:子波分析技术。其基本思想是把瞬变信号分解为若干级,基本上包含信号的高与低频分量。通过分析各级的分解瞬变信号,不仅得到关于瞬变频率含量的信息,还可得到每次瞬变出现的时间,有助于区分由不同原因而引起的瞬变现象。展开更多
基金supported by the National 863 Program (Grant No. 2008AA093001)
文摘The Hilbert-Huang transform（HHT） is a new analysis method suitable for nonlinear and non-stationary signals.It is very appropriate to seismic signals because they show both non-stationary and nonlinear characteristics.We first introduce the realization of HHT empirical mode decomposition（EMD） and then comparatively analyze three instantaneous frequency algorithms based on intrinsic mode functions（IMF） resulting from EMD,of which one uses the average instantaneous frequency of two sample intervals having higher resolution which can determine that the signal frequency components change with time.The method is used with 3-D poststack migrated seismic data of marine carbonate strata in southern China to effectively extract the three instantaneous attributes.The instantaneous phase attributes of the second intrinsic mode functions（IMF2） better describe the reef facies of the platform margin and the IMF2 instantaneous frequency attribute has better zoning.Combining analysis of the three IMF2 instantaneous seismic attributes and drilling data can identify the distribution of sedimentary facies well.
文摘Y99-61821-1017 2001884直流区域配电系统中功率电子变换器控制用的定制DSP 板=The application of a customized DSP board forthe control of power electronic converters in a DC zonalelectric distribution system[会,英]/Ciezki,J.G.&Ashton,R.W.//1998 32nd Asilomar Conference,Vol.2.—1017～1021(PC)Y99-61821-1406 2001885功率系统瞬变检测与分析用的子波=Wavelets for de-rection and analysis of power system transients[会,英]/Reddy,V.M.& Rao,S.S.//1998 32nd AsilomarConference,Vol.2.—1406～1410(PC)介绍了功率系统瞬变检测与分析用一种有效工具:子波分析技术。其基本思想是把瞬变信号分解为若干级,基本上包含信号的高与低频分量。通过分析各级的分解瞬变信号,不仅得到关于瞬变频率含量的信息,还可得到每次瞬变出现的时间,有助于区分由不同原因而引起的瞬变现象。
