为此，我们引进了海底电缆初至波定位技术。
First-break positioning technique for ocean bottom cable is then introduced to remove above deficiencies.
本文讨论了初至波反演模拟实现静校正的新方法。
A new static correction using inverse modeling of first break is recommended here.
初至波表层速度模型层析反演是层析静校正的重要基础。
The tomographic inversion of the surface layer velocity model with the first break is the important base of the tomographic static correction.
为此，本文提出了一种新的基于图像边缘检测技术的初至波自动拾取方法。
For that reason, the paper presented a new method of automatic first breaks pick-up based on the technique of image edge detection.
现有的用于静校正处理的自动拾取初至波方法的精度和速度已难以适应这种复杂的地表条件。
The precision and speed of automatic detecting first breaks approach currently used for static corrections processing cannot adapt to such complex surface conditions.
数字记录的初至波早于模拟记录，且持续时间较长，大部分的数字地震震级比模拟记录、标准震级小。
The first array wave in digital record is earlier than that in analog record, and with longer duration. It also found that the most of the ear...
根据初至波特点，基于数字图像处理技术，提出了应用边缘检测和边缘追踪技术进行初至波自动拾取的方法。该方法的实现过程为：①对地震记录做单道归一化处理；
The digital image processing such as edge detection and boundary tracing to pick up the first break time is discussed in this paper, which based on the specialty of first break time.
节理产状应力波反演时，关键问题在根据测试振动信号判断出节理面反射纵波初至时刻。
When stress wave is used to inverse joints attitude, the key problem is judge the initial arriving moment of reflected P-wave from the tested vibration signal.
本文提出一个用折射波初至时间计算静校正量的新方法。
This paper presents a static correction method by using the first-arrival times in raw seismic data.
这类PS转换波与初至P波之间的到时差，可用来测定地壳和上地幔构造。
The difference of arrival times between such PS and pp waves can be used to determine the structures in the earth's crust and upper mantle.
采用时间项技术的三维初至折射波静校正方法在求解大型方程组时由于方程组的病态性质将遇到困难。
The 3-d first break refraction static corrections adopted time-term technique has difficulty in solving large-scale set of equations because of ill-conditioned property of set of equations.
采用时间项技术的三维初至折射波静校正方法在求解大型方程组时由于方程组的病态性质将遇到困难。
The 3-d first break refraction static corrections adopted time-term technique has difficulty in solving large-scale set of equations because of ill-conditioned property of set of equations.
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