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隐式有限差分旁轴波动方程偏移已广泛应用于叠前和叠后偏移计划,以便完成成像和速度分析。这种隐式有限差分旁轴波动方程偏移所产生的数值噪声一般对成像质量没有影响,但它将影响速度分析的效果。本文概要介绍了旁轴近似引起的噪声,提出
Implicit finite difference paraxial wave equation migration has been widely used in prestack and poststack migration schemes to complete imaging and velocity analysis. This implicit finite-difference paraxial wave equation shifts the numerical noise produced generally has no effect on image quality, but it will affect the speed of the results of the analysis. This article gives an overview of the noise caused by paraxial approximation and is presented