偏移速度是影响偏移效果的关键因素。
Migration velocity is the key factor which influences the migration result.
由于地震偏移速度的不确定性，偏移成像的质量很难得到保证。
Because of the ambiguity of seismic migration velocity, the quality of seismic migration imaging always bores people.
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.
采用DMO、偏移速度场平滑、叠前深度偏移等技术提高偏移成像精度。
For enhancing the migrated imaging, these techniques, like DMO, migration velocity field smoothing and pre-stack depth migration, are used.
文中还就偏移速度对成像结果的影响和实际资料的预处理问题进行了讨论。
Besides, the effect of migration velocity on imagery depth and preprocess of real data are discussed.
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.
此方法用于实际数据，结果证明该方法提取的偏移速度模型非常接近真实的速度。
Applying this approach to real data shows that the estimated migration velocity reliably converges to the correct 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.
准确的偏移速度可以通过选用正确的速度模型百分比估算出来，可使成像效果得到最显著的提高。
The correct migration velocity can be estimated by integrating the right percentage of the velocity model, which produces the greatest improvement.
本文介绍了在CGG的INTERBASE系统上用“切片法”建立三维偏移速度场的方法和步骤。
The paper presents the methods and steps of building 3-D migration velocity field with "Slice Method"on INTERBASE system of CGG.
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.
线性加速度传感器通常有一个偏移量，你需要把它去掉。
Thelinear acceleration sensor always has an offset, which you need to remove.
由降落区内将直升机垂直起飞，保持稳定的上升速度，上升的过程中允许轻微的横向偏移。
The take-off should be performed straight up from the landing area, at a constant rate of climb, with little lateral deviations.
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.
接下来你可以去除掉这些偏移量，最后就可以得到真正的线性加速度了。
You can then subtract that offset from the acceleration sensor's direct readings to get the actual linear acceleration.
偏移的目的是要反演波动方程系数的奇性(层速度的间断面)。
The purpose of migration is to inversely solve for the singularity (interrupted surface of interval velocity) of wave equation coefficient.
本文还给出了根据（静校正的）CMP基准面计算地表圆滑面的方法，统一了深度域中速度谱、时深转换和深度偏移的基准面。
A method for deriving the smoothed ground surface from CMP datum of static correction is given to form a common datum for velocity spectrum, time-depth conversion and depth migration in depth domain.
当介质的速度在横向上存在较大的变化时，波动方程时间偏移不能使地下的构造正确成像。
Wave equation time migration fails to image subsurface geological structure correctly in the case of obvious lateral seismic velocity variation.
介绍一种能够适应介质速度横向变化的非稳态相移算子及其叠前深度偏移方法。
The paper introduces a prestack depth migration by nonstationary phase shift method suitable for laterally variable velocity.
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.
这种断层带上的侧向速度急剧变化还有其它表征，诸如震中定位的偏移、地震节平面的变形等等。
Other evidence for severe lateral velocity change across the fault zone lies in hypocenter bias and nodal plane distortion for earthquakes on the fault.
高陡构造资料处理采用层速度时深转换技术和射线深度偏移技术，将得到比较准确的构造成像剖面。
Using time depth conversion and depth migration technologies for data processing, more proper structural imaging profiles in steep structure were obtained.
利用分偏移距成像，修正速度场，以达到提高成像精度的目的。
We update the velocity field by separated offset imaging to raise imaging precision.
射线追踪的速度和精度直接影响地震资料的静校正和偏移成像的质量。
The speed and precision of ray tracing affect the quality of statics and migration for seismic data.
这种相关器可以一步搜索到所有可能的码相位偏移，大大提高了捕获速度，比较好地满足了实时处理的要求。
This correlator can search all possible code shifts in one step, so decreases the acquisition time, meets the real-time requirements.
这种相关器可以一步搜索到所有可能的码相位偏移，大大提高了捕获速度，比较好地满足了实时处理的要求。
This correlator can search all possible code shifts in one step, so decreases the acquisition time, meets the real-time requirements.
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