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。
As to migration velocity analysis, it is suggested to start with a little higher initial velocity.
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。
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.
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。
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.
本文在平面波剩余速度分析方法的基础上提出了基于波动理论的合成震源记录剩余偏移速度分析方法。
We proposed residual migration velocity analysis by synthetic source records based on residual migration velocity analysis in the plane wave domain.
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。
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.
利用井间地震特有的共偏移距道集，找出了适宜于分析井间地震偏移速度的方法。
Using special common offset gather for crosshole seismic, a migration velocity analysis method is developed for crosshole seismic.
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。
Then the trace gather undergoes velocity analysis, normal moveout correction and stack to bring seismic migrated section ( This is called scattering point imaging).
其次，我们还针对天然气水合物的特性，研究并分析了资料处理过程中的速度分析、叠加处理、和偏移处理软件。
Then, software about velocity analysis, stack and migration are studied and analyzed basing on the characteristics of the hydrate.
在多普勒调频斜率估计中，时频分析法比较直观，估计精度也不错，脱机处理中获得了广泛的应用，图像偏移法估计速度快，在运动补偿中得到了应用。
Image offset method that is also fast can be applied to motion compensation, time-frequency method is intuitionistic and have a better accurate, which is applied extensively on offline.
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。
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。
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.
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