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pulse deconvolution
相关语句
  脉冲反褶积
     Based on an unknown mixed-phase pulse deconvolution proposed by Huang Xiaojing,an improved deconvolution method is presented in this paper.
     在黄小晶等人提出的混合相位未知脉冲反褶积方法[1、2]基础上,本文提出一种改进的反褶积方法。
短句来源
     Under unreasonable presumption that wavelet doesn't vary with time,processing whole seismic trace by pulse deconvolution results in the seismic section thathas high-frequency contents in shallow part but low-frequency contents in deeppart.
     由于地震子波的时变性,在假设子波为非时变的情况下,用脉冲反褶积对整个地震道进行处理,所得地震剖面会出现浅层频率高,深层频率低的现象。
短句来源
     Burg deconvolution, using running window,is suitable to time-varying property of wavelet; but restricted by Levinson relation,it stillfails to cast off the characteristics of Toeplitz matrix and to remove fully the defectof pulse deconvolution.
     Burg反褶积虽然采用滑动时窗,可适应子波的时变性,但由于受Levinson关系的约束,仍然摆脱不了Toeplitz矩阵的性质,不能完全克服脉冲反褶积的缺限。
短句来源
     As a result,this method offers much better reflection coefficients than ordinary segmental pulse deconvolution does.
     因此,此法要比普通分段脉冲反褶积求解反射系数的精度高得多。
短句来源
  相似匹配句对
     THE PULSE COMPRESSION CRITERION IN DECONVOLUTION
     反褶积中的脉冲紧缩准则
短句来源
     THE PULSE COMPRESSION CRITERION IN DECONVOLUTION
     褶积反演中的脉冲压缩准则
短句来源
     Taking the Pulse
     脉冲爆震发动机技术的最新进展
短句来源
     On Arrythmia Pulse
     乍疏乍数脉之我见
短句来源
     Deconvolution Theorem
     反卷积定理——有零点的频谱的反卷积解法
短句来源
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Deconvolution methods based on the pulse compssion pfinciple are an alyzed,and a more generalized lp-norm criterion for wide use is Proposed,which in cludes as Special cases pulsc deconvolution,minimum-entropy deconvolution lt-norm deconvolution and D norm deconvolution.According to the p-norm properties of the finitc dimensional spao ad the geometric properties of the higher-dimensional space,an analysis is made on the effect of the Parameters in the generalized lp-norm method,and a criterion function is...

Deconvolution methods based on the pulse compssion pfinciple are an alyzed,and a more generalized lp-norm criterion for wide use is Proposed,which in cludes as Special cases pulsc deconvolution,minimum-entropy deconvolution lt-norm deconvolution and D norm deconvolution.According to the p-norm properties of the finitc dimensional spao ad the geometric properties of the higher-dimensional space,an analysis is made on the effect of the Parameters in the generalized lp-norm method,and a criterion function is designed to compare pulse compression of different methods.It is also theoretically proved why for nonminimum-phase signals the l1-norm approach yields better pulse compression than pulse deconvolution,and why the D-norm approach has more“simplicity”than general minimum-entropy methods.New deconvolution methods can be readily constructed,and analyzed,by use of this generalized lp-norm criterion.The results provide a better understanding of the fole these deconvoluttion methods play in enhancing the resolution and the theoretical basis for further study of the optimal pulse compression criterion and the algorithms to find its optimal solution in deconvolution.

通过分析基于脉冲压缩原理的反褶积方法,提出了具有广泛用途的广义Lp模准则,像脉冲反褶积、极小熵反褶积、L1模反褶积和D模反褶积等都为其特例.根据有限维欧氏空间的L。模性质和高维欧氏空间的几何性质,分析了广义Lp模方法中的参数影响.为了比较不同反褶积方法的脉冲压缩效果,给出了一类判别函数,从理论上证明了,为什么对非小相位信号L1模法的脉冲压缩效果优于脉冲反褶积;D模反褶积要比常规极小熵法更具有“简单性”。广义Lp模准则为构造、分析新的反褶积方法和进一步研究最优脉冲压缩准则提供了必要的理论基础。EAsuchthatAssumeY*=cy/I.(Y).Obviously1.(y*)=candhenceY*isafeasiblesolutionof(GLP).Ontheotherhand,whichcontradictsY*eE.Consequently,y*eA,andthusA=E.(2)WenowproveE=A.SupposeY*eA.Then,thereexistsana>0suchthatby*~E.Ifthiswerenottrue,let1.(aY*)=cbutZy*fE.Then,ther?

Based on an unknown mixed-phase pulse deconvolution proposed by Huang Xiaojing,an improved deconvolution method is presented in this paper. Compared with Huang's decomvolution,this method possesses the advantages of (1)less operation and (2)a better deconvolution effect for the seismic wavelet compression.

在黄小晶等人提出的混合相位未知脉冲反褶积方法[1、2]基础上,本文提出一种改进的反褶积方法。与文献[2]的反褶积方法比较,本方法具有运算量小,压缩地震子波的反褶积效果更好等优点。

Under unreasonable presumption that wavelet doesn't vary with time,processing whole seismic trace by pulse deconvolution results in the seismic section thathas high-frequency contents in shallow part but low-frequency contents in deeppart. It has been shown that windowing also brings poor effect of the deconvolutionwhen the time window is short. Burg deconvolution, using running window,is suitable to time-varying property of wavelet;but restricted by Levinson relation,it stillfails to cast off the...

Under unreasonable presumption that wavelet doesn't vary with time,processing whole seismic trace by pulse deconvolution results in the seismic section thathas high-frequency contents in shallow part but low-frequency contents in deeppart. It has been shown that windowing also brings poor effect of the deconvolutionwhen the time window is short. Burg deconvolution, using running window,is suitable to time-varying property of wavelet;but restricted by Levinson relation,it stillfails to cast off the characteristics of Toeplitz matrix and to remove fully the defectof pulse deconvolution. To cope with the problem, we advance the deconvolutionbased on unconstrained forward-backward prediction error minimization. Themethod needs neither the solution of Toeplitz matrix nor the presumption thatwavelet does not vary with time,and it can be fast achieved by using MARPLE recursion algorithm. Theoretical and real results say that the deconvolution method isfirm and effective on both small window and big window.

由于地震子波的时变性,在假设子波为非时变的情况下,用脉冲反褶积对整个地震道进行处理,所得地震剖面会出现浅层频率高,深层频率低的现象。实践证明,采用开时窗的方法在时窗短时,这种反褶积的效果也很差。Burg反褶积虽然采用滑动时窗,可适应子波的时变性,但由于受Levinson关系的约束,仍然摆脱不了Toeplitz矩阵的性质,不能完全克服脉冲反褶积的缺限。为此,我们提出了无约束正反向预测误差最小反褶积方法。该方法无需解Toeplitz矩阵,也不要求子波是非时变的,并采用Marple递推算法快速实现。理论分析和实际应用的效果表明,该方法是一种对小时窗和大时窗均有效且稳健的反褶积方法。

 
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