extrapolation operator

基本解释

We improved FFD extrapolation operator to compensate the amplitude difference generated by geometry diffusion loss.
通過改進傅立葉有限差分的延拓算子，補償了幾何擴散損失引起的振幅誤差。
Starting from the decomposition of wave equation extrapolation operator in 3-D non-uniform medium, the paper gained one-way wave-equation used for true amplitude migration;
本文從三維不均勻介質中的波動方程外推算子分解出發，得到了用於真振幅偏移的單程波方程；
Af-x Explicit migration is carried out through spatial convolution of finite-length extrapolation operator with frequency slice, which is concise, high efficient, and easy to extend from 2D to 3D.
頻率空間域顯式偏移利用有限長度的褶積算子，通過對不同的頻率進行空間褶積來實現偏移成像，且具有簡潔、高傚、便於擴展等特點。