3) first break picking
初至拾取
1.
Analysed are calculating errors caused in depth measurements, first break picking and downhole depth-points surveying.
介绍了VSP计算时间 -深度关系的原理 ,从深度测量、初至拾取、观测系统 3个方面分析了计算误差的来源 ,并提出了在野外采集和处理解释过程中应采取的预防和校正措施。
2.
Rather large errors will be happened usually in conventional method of first break picking.
常规的初至拾取方法存在着较大的误差。
4) first break pickup
初至拾取
1.
After both first break pickup and trace gathering are fini-shed, the residual time shifts in common-shot,common-receiver and common offsetdomains can be known respectively by taking the top of high velocity layer as thedatum.
本方法以野外获得的表层调查资料和野外静校正量作为初始条件,经初至拾取、道集分选后,以高速层顶板为基准面,在共炮点、共接收点和共炮检距三个域内分别提取剩余时差,进而对大量的数据体进行统计,利用正交迭代求取出全局最优化的剩余静校正量。
5) first break picking
初至波拾取
6) first break intelligent picking
初至智能拾取
补充资料:自动
①自己主动;出于自己心愿:非常自动地来到车站送行|自动报名参加。②不靠外力的:自动燃烧。③指器械通过自身的装置而活动:自动传输|自动售货机。
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