| 1. | Migration velocity analysis and prestack migration of ground - penetrating radar
地质雷达资料的偏移速度分析和叠前偏移 |
| 2. | 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。 |
| 3. | Common focus point gather migration velocity modeling based on constraint parameter inversion
基于约束参数反演的共聚焦点道集偏移速度建模方法 |
| 4. | Because of the ambiguity of seismic migration velocity , the quality of seismic migration imaging always bores people
摘要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。 |
| 5. | In this paper , we present a new migration velocity analysis method - synthetic source record interactive residual migration velocity analysis method based on controlled illumination
摘要提出了一种新的偏移速度分析方法基于控制照明的合成震源记录交互剩余偏移速度分析方法。 |
| 6. | A migration velocity analysis method is proposed , in which the problem of velocity analysis is converted to the problem of determining the local maximums of the defined criterion function
利用等时原理，把建立速度场问题转化为求取判别函数的局部极值问题，可以利用优化方法求解此问题。 |
| 7. | A synthetic example shows that the proposed migration velocity analysis method can determine accurately the distribution of permittivity and that stack migration profile fits the true model
合成雷达记录的偏移速度分析和偏移叠加结果表明，全局最优化偏移速度分析有较高的精度，偏移叠加剖面与实际构造一致。 |
| 8. | This paper reviewed the theory , development and applications of 3 typical velocity analysis technologies , stack velocity analysis , migration velocity analysis and tomographic inversion
主要对叠加速度分析、偏移速度分析和速度层析反演三大类典型的速度分析方法的基本原理、发展及应用条件等作简要的回顾与介绍。 |
| 9. | The differences between this method and other similar methods are : ( 1 ) the fast synthetic source record algorithm based on the wave theory is adopted in prestack depth migration . ( 2 ) the plane wave source is used in migration that is consistent with the velocity analysis method . ( 3 ) by using the controlled illumination , the distortion of the plane wave source wavefield due to the lateral velocity variation is avoided therefore the error of velocity analysis is reduced and ( 4 ) the practical velocity spectrum makes the interactive migration velocity analysis feasible and convenient
与其他类似偏移速度分析方法的不同点在于： ( 1 )叠前深度偏移采用基于波动理论的快速合成震源记录算法； ( 2 )偏移方法采用平面波震源，与速度分析方法一致； ( 3 )应用控制照明技术，避免了因横向变速而导致的平面波震源波场在传播过程中的畸变，从而减小了速度分析的误差； ( 4 )实用的速度谱设计，使交互偏移速度分析可行且易于操作。 |
