中文摘要：

提出了一种新的地震波初至时刻拾取的方法，即将原始时间序列信号映射到相空间当中，通过其相空间图的特征进行初至时刻的拾取。相对于非常耗时的传统方法，本方法使得运算速度提高，结果更加精确稳定。

英文摘要：

A new method is proposed for picking up the seismic first arrival time in this paper. The method ,which makes the original time serial mapping in the phrase space, picks up the seismic first arrival time according to its character of the phrase space. Contrast with traditional methods which spends long time for picking up the first arrivals, the new method improves the calculation speed and strengths the stability of result.