点-扩展函数表征成像的分辨率，即接收排列长度和环境带宽的函数。

The point-spread function (PSF) characterizes the resolution of the image, which is a function of the receiving array length and the ambient bandwidth.

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从地形起伏周期和地震排列长度关系的角度分析了地形起伏对速度分析结果的影响。

Topographic relief is treated approximately as a wave consisted of harmonic waves of different cycles in this paper, and the effect of topographic relief on velocity analysis is discussed.

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SV波的传播时间也可用三项泰勒展式表达，在中等及短排列长度时可达到一定精度。

For the P-SV wave travel time, it also can be expressed exactly by a three-term Taylor series in short or moderate spreads.

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