时距曲线（hodograph，time-distance curve）指地震波走时与距离的关系曲线，即地震波到达各检波点的时间同检波点到爆炸点的距离之间的关系曲线，曲线上各段的斜率就是各地震波视速度的倒数。
VTI介质中反射P波时距曲线一般不再是双曲线。
The traveltime-distance curve of reflected P-wave in VTI media is not hyperbolic anymore.
本文提出并解决了折射波时距曲线及解释剖面的自动绘制问题。
This paper presents and solves the question of drawing the refractive time distance curve and the interpretation profile automatic ally.
研究了多道地震信号的最佳估计以及因之而提出的反射波时距曲线段的拟合问题；
The optimal estimate problem of multichannel seismic signals is investigated, and then the fitting of reflection travel-time distance relationship segment is applied and discussed.
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