Abstract:We present a method for constructing one-way wave equation with the use of a parameter that is related to the angle of wave incidence. The constructed wave equation can be satisfied for plane incident waves at two directions, and split into two low order equations similar to 15º or 45º equation respectively. By identifying the near normal incident and near glancing waves, and giving the three values θ=0, π/4, and π/2, we can effectively resolve three problems: the incorrectness in instantaneous determination of incident angle, poor posed boundary and boundary reflection. The boundary treatments of both stack section made from plane wave sources and point-shot records prove this method excellent. The application of such one-way wave equation to exploiting WIMIG module for migration is described finally.
柯本喜, 戈良玉, 严昌言, 范祯祥. 一种单程波动方程的构造方法与应用[J]. 石油地球物理勘探, 1992, 27(3): 318-330.
Ke Benxi, Ge Liangyu, Yan Changyan, Fan Zhenxiang. Construction of one-way wave equation and the application. OGP, 1992, 27(3): 318-330.