相移算子 meaning in Chinese
phase-shift operator
Examples
- Based on the study of the method of creating short explicit difference operators , a method for creating short explicit operators is presented , which is based on discrete smooth interpolation with control of phase - shift operator
基于对显式差分短算子的设计方法的研究，提出了一种基于相移算子约束的离散光滑插值的构造一维显式短算子的方法。 - A hybrid migration method , named " fourier finite - difference migration " , is a post - stack depth migration scheme . the downward extrapolation operator is split into three operators : one operator is a phase - shift operator for a chosen constant background velocity , another operator is the well - known first - order correction term , and the third operator is a finite - difference operator for the varying of the velocity function . phase - shift downward extrapolation and finite - difference downward extrapolation preserves the advantage of phase - shift method and finite - difference method
傅立叶有限差分(简称ffd )偏移算法是一种叠后深度偏移算法，其向下延拓算子是一种混合算子，包括三项：一项是处理常速的相移算子，一项是一阶相移修正算子，最后一项是类似45度方程的有限差分算子，用来处理剧烈横向变速。 - In the wavefield - spread area , we uses the phase - shift operator as constraint in frequency - wavenumber field , while beyond the wavefield - spread data , we uses zero point at the ends of phase - shift operator as constraint to take discrete smooth interpolation so that the resulted operator satisfies two - order smooth and the length of this operator can be selected shorter in frequency - space field
通过离散光滑插值法，在频率波数域中，以传播区内的相移算子为约束，在传播区外的算子两端处以零点为约束，进行离散光滑插值，使得所得算子具有二阶光滑可导性，则其对应的频率空间域中的算子就可以取得很短。