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波动理论的合成地震记录是地震资料处理和解释中的重要研究课题。 目前,制作波动理论的合成记录主要是用Trorey的克希霍夫方法,正在研究的有有限差分法和有限元素法。本文提出一种新的方法,在频率域中制作波动理论的合成记录,给出了与克希霍夫绕射波方程等价的频率域中的绕射波方程。在国产DJS-11型计算机上,应用两种绕射波方程实现了合成地震记录,并且进行了比较,认为频率域方法是有效的,可以用于波动方程偏移和地震资料解释,进一步工作有可能获得多层变速模型的波动理论记录。
Synthetic seismograms from wave theory are important research topics in seismic data processing and interpretation. At present, the synthetic record of making wave theory is mainly the Kirchhoff method of Trorey, and the finite difference method and the finite element method under study are under study. In this paper, a new method is proposed to make a synthetic record of wave theory in the frequency domain, and the diffraction wave equation in the frequency domain equivalent to the Kirchhoff’s diffraction equation is given. Synthetic seismograms are realized by using two kinds of diffraction wave equations on a domestic DJS-11 computer, and compared, the frequency domain method is valid, which can be used for wave equation migration and seismic data interpretation. Further work includes It is possible to obtain a wave theory record of a multi-layer variable speed model.