High velocity accuracy, high computation speed and advanced velocity display method are the three aims sought in velocity analysis technique.
提高速度精度、加快计算速度、改善速度的显示方法，一直是人们在速度分析技术上所追求的三个具体目标。
This thesis is about the research of stack velocity analysis and singularity detection.
本文的主要研究工作就是叠加速度分析和奇异性检测。
Hence, we put forward three parameter velocity analysis and its spectrum interpretation.
因此，本文提出了三参数速度分析及其谱的解释方法。
This lays a foundation for the traveltime and velocity analysis of reflective seismic waves.
这为反射地震波的旅行时及速度分析提供了基础。
As to migration velocity analysis, it is suggested to start with a little higher initial velocity.
在偏移速度分析中，从稍大的速度开始分析会对速度分析更加有利。
If selecting different datum, the corresponding results of velocity analysis and stack are different too.
如果选择不同的基准面，相应的速度分析和叠加结果也会不同。
On that basis, the methods for three-parameter velocity analysis and NMO of converted wave have been formed.
在此基础上，形成了转换波三参数速度分析及动校正方法。
The velocity analysis accuracy may be raised by applying iterative stacking method and multiplying model trace stacking method to common-range gathers.
采用同炮检距道集进行迭代叠加和乘模型系数道叠加，可以提高速度分析的精度。
Migration velocity analysis is one of the key steps in pre stack depth migration whose accuracy directly affects the quality of pre stack depth migration.
偏移速度分析是叠前深度偏移的关键步骤之一，它的准确与否直接影响叠前深度偏移的质量。
The dip direction and dip Angle of a subsurface interface must be first determined in three-parameter velocity analysis that needs predetermined dip Angle.
采用预求倾角法进行三参量速度分析时，首先要确定地下界面的倾向和倾角。
It can act as an interim key step of imaging complex structure, which plays an important role for ensuring quality of velocity analysis and depth migration.
它可以作为复杂构造成像的一个关键的中间环节，对于提高最终的速度分析质量和深度偏移成像效果是至关重要的。
Then the trace gather undergoes velocity analysis, normal moveout correction and stack to bring seismic migrated section ( This is called scattering point imaging).
然后对该道集进行速度分析、动校正和叠加，得到偏移地震剖面，即共散射点成像。
At present, the true 3D processing technique does not meet the requirement of 3D acquired data, of which the three-parameter velocity analysis is the key of technique.
笔者认为，目前全三维处理技术尚不能满足全三维采集的要求，而其中三参量速度分析是技术的关键。
Depth conversion, ideally, is an iterative process that begins with proper seismic processing, seismic velocity analysis and study of well data to refine the conversion.
深度转换，是一种迭代过程，从适当的地震处理开始，经地震速度分析和井中数据研究，逐步地精练转换过程。
The paper recommended two methods for velocity analysis in VTI medium: non-hyperbolic P-wave velocity analysis and template method, which achieved practical and stable effects.
文中推荐VTI介质P波非双曲线速度分析及量板法两种方法，得到了较为实用、稳定的结果。
Semblance spectrum is the important tool to judge whether the migration velocity is correct or not and obtain the velocity update amount in residual curvature migration velocity analysis.
相干谱在剩余曲率偏移速度分析中，是判别速度是否正确以及求取速度更新量的重要工具。
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。
Topographic relief is treated approximately as a wave consisted of harmonic waves of different cycles in this paper, and the effect of topographic relief on velocity analysis is discussed.
从地形起伏周期和地震排列长度关系的角度分析了地形起伏对速度分析结果的影响。
Considering the properties of low stack folds, shallow objected layers and big background noise of shallow seismic data, the parameters selection for velocity analysis is studied in the paper.
针对浅层地震资料目的层较浅、叠加次数少和城市背景干扰大等特点，文中对速度分析的参数选取问题进行了研究。
How the formation dip, velocity scan parameters and coherence determination affect velocity analysis accuracy is specially discussed on the basis of summing up traditional velocity analysis methods.
基于传统的速度分析方法，着重讨论了地层倾角、速度扫描参数及相干性测量给速度分析精度带来的影响。
The method of stack velocity analysis based on relief surface presented in the paper uses double-square-root equation to compute the travel time of reflections, which is suitable to use in the area w.
本文提出的基于起伏地表的叠加速度分析方法，应用双平方根方程计算反射波的旅行时间，可适用于地形起伏剧烈地区。
Velocity analysis provides the best stack velocity for stacking.
而速度分析则是为叠加提供最佳的叠加速度。
Velocity analysis of converted wave is a very important step in multi-wave seismic data processing.
转换波速度分析在多波地震资料处理中占有重要地位。
Velocity analysis of converted wave is a very important step in multi-wave seismic data processing.
转换波速度分析在多波地震资料处理中占有重要地位。
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