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在小型计算机上对复杂陡构造作正演时,可用有限元素表示地质剖面;用二次拉格朗日插值公式拟合反射界面的形态。初始的正演模型可根据实际资料采用成像射线跟踪法设计。依据正演结果和实际的迭加时间剖面吻合程度,由浅至深一层一层地修改模型各反射界面的形态,直到由模型作出的时间剖面最佳地逼近迭加时间剖面。此时,所得的正演模型即为求解的地质剖面。
In the small computer forward for complex steep structures, finite element can be used to represent the geological section; the second Lagrange interpolation formula fitting reflection interface morphology. The initial forward model can be based on actual data using imaging ray tracing method design. According to the anastomosis degree between the forward result and the actual superimposed time profile, the shape of each reflective interface of the model is modified from shallow to deep until the time profile made by the model best approximates the superimposed time profile. At this point, the resulting forward model is the geological section to be solved.