Prestack depth migration is an optimal imaging method for PSV wave.
叠前深度偏移是转换波最佳成像方法。
Pre-stack depth migration is an important method used to explore complex area.
叠前深度偏移是人们解决复杂条件下勘探的重要方法。
Depth error in depth migration isn't equal to velocity error, sometimes it is twice as many.
深度偏移剖面中的深度误差与速度误差并不相等，有时可以达到速度误差的两倍。
The experiments show that ray depth migration is effective to restoration of true formation occurrence.
试验表明，射线深度偏移对于恢复真实地层产状是有效果的。
Based on plane wave decomposition, We propose a wave-equation depth migration method for pre-stack seismic data.
提出了一套基于平面波分解的波动方程叠前地震数据深度偏移方法。
The technique of seismic pre-stack depth migration is used to correctly implement the complex structural imaging.
采用地震造前深度偏移技术，使复杂构造正确成像。
Pre-stack depth migration technique can be realized either in shotpoint receiver domain or in CMP offs et domain.
叠前深度偏移技术既可在炮点—接收点域实现，也可在共中心点—炮检距域实现。
Depth error in depth migration profile isn't equal to velocity error, sometimes it is twice as many as velocity error.
深度偏移剖面中的深度误差与速度误差并不相等，有时可以达到速度误差的两倍。
Therefore, the wave equation pre-stack depth migration, a method starting directly from the rolling surface, is discussed.
为此，探讨了直接从起伏地表开始的波动方程叠前深度偏移方法。
Wave equation prestack depth migration technique is an effective method of seismic data imaginating in complicated surfaces.
波动方程叠前深度偏移技术是复杂地表地震资料成像的有效方法。
The extended ray tracing method can be applied to further researches on depth migration and seismic tomography for TI media.
本文方法可用于横向各向同性介质的深度偏移及地震层析成像的深入研究。
The paper introduces a prestack depth migration by nonstationary phase shift method suitable for laterally variable velocity.
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。
For enhancing the migrated imaging, these techniques, like DMO, migration velocity field smoothing and pre-stack depth migration, are used.
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。
We have realized the parallelization of 3-D post-stack depth migration software on SP2 with PVM, and gained ideal parallel efficiency and scalability.
使用PVM编程，将串行的三维叠后深度偏移软件，在SP2上实现了并行化，获得了理想的并行效率和可扩展性。
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 finite difference depth migration equation in space-frequency domain can be derived when the radical expression is approximated by continued fraction.
采用连分式近似，可以得到空间频率域的有限差分深度偏移方程。
Using time depth conversion and depth migration technologies for data processing, more proper structural imaging profiles in steep structure were obtained.
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。
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。
Since the one way wave equation modeling scheme can be considered as the inverse depth migration, we can use the current depth migration schemes and its codes.
单程波算法可视为深度偏移的“逆运算”，这样可以很好地借用已知的深度偏移方法及其程序系统。
Prestack depth migration is an effective tool for complex geologic body imaging. The quality of its image depends mainly on the accuracy of velocity-depth model.
叠前深度偏移是复杂地质体成像的有力工具，其成像的质量主要取决于所用速度-深度模型的精度。
The depth migration with higher-order approximation by time-shift algorithm eliminates the frequency dispersion and amplitude distortion in the calculation process.
本文使用高阶方程深度偏移方法，并且在计算中采用了一种与差分运算等价的时移法解决了计算中出现的频散和振幅失真问题。
Prestack depth migration is an ideal technique for seismic data imaging in the regions with complex structural conditions and severely changeable lateral velocities.
叠前深度偏移技术是解决复杂构造和速度横向变化剧烈地区的地震资料成像问题的理想技术。
The 3-D wave equation prestack depth migration is one of the most important techniques in the structure imaging and the inversion of elastic parameters of complex media.
三维波动方程叠前深度偏移是复杂介质中进行构造成像、弹性参数反演的重要环节。
Common focus point (CFP) migration based on the equal travel-time principle is a kind of pre-stack depth migration method through focusing in both emission and detection.
共聚焦点(CFP)偏移是基于等时原理，通过激发聚焦和检波聚焦的双聚焦实现叠前深度偏移的地震成像方法。
Pre stack depth migration which starts directly from undulating earth surface turns out to be a valid way to deal with irregular topography and complex geologic structures.
直接从起伏地表开始的叠前深度偏移方法是对付复杂地表和复杂地质构造成像的有效手段。
The paper also introduced the forward simulation of Shenli Oilfield typical model and application of their data volume to study prestack depth migration and design of geometry.
然后介绍了胜利油田典型模型的正演模拟及其数据体在研究叠前深度偏移方法和观测系统设计方面的应用。
Although the wave field based pre-stack depth migration is the most reliable method for complex structure imaging, it has a high computation cost and a poor adaptation to geometry.
基于波场延拓的叠前深度偏移是实现复杂构造地质体成像的可靠方法，但存在着计算量大、对观测系统适应性差等缺点。
Although the wave field based pre-stack depth migration is the most reliable method for complex structure imaging, it has a high computation cost and a poor adaptation to geometry.
基于波场延拓的叠前深度偏移是实现复杂构造地质体成像的可靠方法，但存在着计算量大、对观测系统适应性差等缺点。
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