1) head arrival
首波波至
3) Head wave
首波
1.
Head wave could be easily picked up through signal processing.
本文分析阵列声波测井中声波全波列信号的特点,采用前置通道信号调理技术对声波信号进行预处理以便于首波提取,并阐述一种首波到时的提取技术及实现算法。
2.
This article presented a simple but useful method for head wave detecting based on the characteristics of cemented well logging.
首波检测是固井声波测井中最为重要的工作之一。
3.
In this system,80C186 is at heart of the central control unit,mainly to communicate with over-ground system and make whole system work successfully;data acquisition and processing can be accomplished by TMS320VC5416,with the functions of digital filtering,splicing of multiple waves,and calculating the arriving time of the head wave.
该系统以80C186为控制核心,主要实现与地面系统的通信和整个井下系统的控制;采用多片TMS320VC5416构成多通道实时信号处理电路,用于实现数字滤波、波形叠加、首波到时提取等处理。
4) headwave
首波
1.
The critical refraction wave arrival model for acoustic headwave avoid involving complicated math equations.
声波测并中首波的临界折射波至模型，测并技术，１９９４，１８（２）：１１０～１１５首波的临界折射波至模型避开了繁杂的数学公式，不但能解释首波形成和传播的直观图象，也可以解释范围相当广泛的声波测井中常见的诸多现象，并在此基础上，引入多次反射一临界折射模型。
5) the first S-wave arrival
横波首波
1.
A new technique for picking the first S-wave arrival from dipole shear wave log in slow formation;
在慢速地层中偶极横波测井不能很好地压制纵波,致使横波首波的检测存在一定的难度。
6) acoustic head wave
声波首波
1.
To understand the propagation mechanism of the acoustic head wave and its accompanying electromagnetic field during logging in a porous formation, we studied the displacement characteristics of the wave.
声波测井时孔隙地层中的声波首波平行于井轴沿井壁传播 ,它既有轴向位移分量 ,又有垂直于井壁的位移分量 。
补充资料：禅波
【禅波】
（譬喻）禅定譬湛然之水，妄念乱想比波。性灵集九曰：“静禅波而涉，开觉华以芳。”
（譬喻）禅定譬湛然之水，妄念乱想比波。性灵集九曰：“静禅波而涉，开觉华以芳。”
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条