波场外推算子的多分辨分解和压缩

波场外推矩阵的多分辨表示有两咱形式：标准表示和非标准表示。在标准表示中，各个尺度之间存在较强的耦合效应，这不仅影响地下界面的位置和方向的成像，而且运算效率低；非标准形式的钦发辨表示在各个尺度之间不存在耦合疚，而且运算效率高于前者。基于完全偏移孔径的波场外推矩阵的非标准形式的多分辨分解和压缩，本文对地在接收到的波场进行了偏移成像。成像效果表明，这种方法的成像精度高于有限领衔孔径方法，运算效率快于完全

Multi-resolution decomposition and compression of wave-field extrapolation operator.

There are two multi-resolution expressions of wave-field extrapolation matrix, namely standard expression and nonstandard expression. In standard expression, there exists obvious coupling effect between scales, which not only harms the accurate image of subsurface interface but also causes slow operation. In nonstandard expression, there is no coupling effect between scales, and operation is faster than that in standard expression. The wave field recorded on ground surface is migrated and imaged on the basis of nonstandard multi-resolution decomposition and compression of wave-field extrapolation matrix in full migration aperture. The image result shows that the method brings more accurate image than limited migration aperature method does, and causes higher operation effect than full migration aperature method.