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已经研制出一种确定倾斜层反射波旅行时的方法。这种方法的计算效率高,在于系根据时距曲线与由射线跟踪法的参数方程获得的数据点而不是与由迭代射线跟踪法获得的数据点拟合,来确定特定的震源一接收距离的旅行时间。这两种方法的比较说明了误差是小的,而且以参数确定时距曲线的计算效率较高。此外,固定震源的时距曲线还被用于确定相同倾斜层上的共地面点排列布置的旅行时(或正常时差)。在使用该方法时,需要的额外计算很少。
A method has been developed to determine when a reflected wave of an inclined layer travels. The computational efficiency of this method is high in that it depends on fitting the time-distance curve with the data points obtained by the ray tracing parameter equations rather than the data points obtained by the iterative ray-tracing method to determine the specific source-receiver distance travel time. The comparison of these two methods shows that the error is small, and the parameter calculation of the time-distance curve is more efficient. In addition, the time-of-flight curve of a fixed source is also used to determine the travel time (or normal time difference) of the arrangement of common ground points on the same inclined plane. When using this method, extra calculations are required.