摘要 Simon Spitz(1989)提出的用F-X域预测技术实现道内插的方法,尽管有许多优点,但还是存在计算量大、精度低等一些问题。本文给出了一种新的F-X域实现道内插的方法,该方法是利用F-X域预测算子包含了所有反射波同相轴的倾角信息这一特性来实现道内插。它不必像常规方法那样扫描反射波同相轴的倾角,而且即使存在严重的空间仅频时,也可得到较好的内插效果。理论与实际资料试验的结果表明,该方法具有速度快、精度高、内插出的地震道波形自然、不受空间仅频影响等优点,但前提是要求在作道内播之前道距必须相等。
Abstract:Although Simon Spitz's trace interpolation using F-X domain prediction(1989)has many strong points,yet it still has some troubles such as tediously long computation and low accuracy. A new trace interpolation in F-X domain is recommended here;it achieves trace interpolation by using the fact that F-X domain prediction operator has the dip-angle informations of all reflection legs. It needs no dip-angle scanning of reflection legs which is usually done in other methods, and brings good interpolation effect even when there is severe spatial abasing. The trial results of theoretical and real data show that the method fast produces accurate interpolatedtraces having natural waveforms and is not influenced by spatial abasing on condition that the original seismic trace intervals are equal.