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如果把一个共中心点道集内折射层的速度近似为常数，顶面近似为 平滑斜面，那么，折射 旅行时与偏移距满足直线方程。直线的斜率为折射层速度的倒数，截距为共中心点的时间深度，据此提出了共中心点域折射波解释方法。模型试验表明，该方法简单、不需要约束条件 、计算快速、解稳定、适应性强。运用该方法确定了我国西部某油气勘探区的近地表模型， 较好地解决了该区的长波长静校正问题。
If the velocity of a refraction layer in a concentric point gathers approximates a constant and the top surface approximates a smooth slope, then the refraction travel time and offset satisfy the linear equation. The slope of the straight line is the reciprocal of the velocity of the refraction layer and the intercept is the time depth of the center point. The model tests show that this method is simple, does not require constraints, fast calculation, stable solution and strong adaptability. By using this method, the near surface model of a hydrocarbon exploration area in western China is determined, and the long wavelength static correction problem in this area is well solved.