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- The authors propose a migration velocity analysis method based on a global optimization. 提出用全局最优化偏移速度分析方法求取介电常数分布。
- As an inverse problem,migration velocity analysis tries to infer the velocity model from the picked residual curvatures on common image-point gathers(CIGs). 作为一种反问题方法,偏移速度分析利用共成像点道集上的剩余曲率成像点来反演速度模型。
- Since offset ray parameter is proportional to angle of incidence at the reflector, CAI gathers provide a complete set of tools for migration velocity analysis and AVO analysis. 由于照射角和炮检距的对应关系 ;共照射角像集又为偏移速度分析和AVO(振幅随炮检距变化 )分析等提供了有力工具 .
- As an inverse problem, migration velocity analysis tries to infer the velocity model from the picked residual curvatures on common image point gathers (CIGs). 作为一种反问题方法,偏移速度分析利用共成像点道集上的剩余曲率成像点来反演速度模型。
- After reviewing the basic principle of the migration method based on double-square-root (DSR) equation, we introduce a fast angle domain imaging algorithm to facilitate migration velocity analysis. 摘要简单回顾双平方根(DSR)方程偏移一般理论之后,介绍了适应偏移速度分析的角度域成像快速算法。
- Residual migration velocity analysis 剩余偏移速度分析
- Synthetic source record interactive residual migration velocity analysis based on controlled illumination 基于控制照明的合成震源记录交互剩余偏移速度分析
- Migration Velocity Analysis of Common Focus Point Gathers Based on Velocity Scanning 速度扫描法共聚焦点道集偏移速度分析
- Keywords migration velocity analysis;maximum entropy;regularization;inverse problem; 偏移速度分析;最大熵;正则化方法;反问题;
- Wang, T. K., 2006, Migration velocity analysis and inverse-ray imaging of 3-D sedimentary structures, 68th Euro. Assoc. Geo. Eng. Conf., 戴富隆、王天楷,2006,二维可逆射线在三角网格之速度成像,国科会海洋科学研究计画成果发表会,4.
- Keywords seismic exploration;pre-stack depth migration;migration velocity analysis;Kirchhoff integral;residual depth moveout analysis;horizon based tomography;migration aperture; 地震勘探;叠前深度偏移;偏移速度分析;克希霍夫积分;深度剩余延迟分析;沿层层析成像;偏移孔径;
- P-wave velocity analysis in anisotropy medium. 各向异性介质纵波速度分析。
- migration velocity analysis 偏移速度分析
- Equivalent offset migration(EOM)method,which has particular advantages in velocity analysis and imaging,provides ideas for scattered wave imaging. 研究表明,基于等效偏移距的偏移方法(EOM)在速度分析和偏移成像方面具有独特的优势,为散射波成像方法研究提供了思路。
- Equivalent offset migration (EOM) method, which has particular advantages in velocity analysis and imaging, provides ideas for scattered wave imaging. 研究表明,基于等效偏移距的偏移方法(EOM)在速度分析和偏移成像方面具有独特的优势,为散射波成像方法研究提供了思路。
- The 3-D prestack depth migration principally includes three parts: travetime cal-culation, Kirchhoff summation, and velocity analysis. 利用深度偏移后的道集是否拉平进行速度分析,可以进一步修改速度模型。
- The quality of velocity analysis directly affects normal moveout correction, and then affects stack imaging and migration. 速度分析的质量直接影响动校正继而影响叠加成像以及偏移归位。
- Velocity analysis is an important step in seismic data processing, which determines the precision of NMO, CDP stack, post-stack migration and time-depth conversion. 速度分析是地震勘探资料处理中的关键环节,它的准确与否对动校正、共深度点叠加、叠后偏移及时深转换等都将产生影响。
- This thesis bases on the acoustic wave equation, uses the wavefield extrapolation operator in frequency-wavenumber domain to analyze the migration velocity error. 声学波动方程描述了声波动现象的物理本质,本文基于声学波动方程,借助于频率波数域的波场延拓算子来开展偏移速度误差的分析。
- The conventional velocity analysis does not consider the influence of the NMO velocity varying with offset, making the results not ideal, leading to a poor stacking and migration imaging. 由于动校正速度是随偏移距变化而变化的,而常规速度分析并没有考虑这一因素,动校正效果往往不是很理想,从而影响资料的叠加和成像效果。