As the datum goes away from the earth surface, the error generated by the horizontal datum and one-pass statics method increased.
试验结果表明 ,采用水平基准面两步法静校正 ,时间剖面反演深度误差最小 ;当基准面远离地表时 ,水平基准面一步法静校正也会产生较大的误差 ;非水平基准面两步法或一步法静校正 ,基准面的起伏越大 ,反演的深度误差越大 ,甚至出现构造假
The advantages of the two-step static correction using leve datum are expounded.
本文提出RG线所对应的空间位置是真正的浮动基准面的概念，论述了水平校正基准面两步法静校正的优点，指出当前在某盆地所采用的“浮动基准面”是一种固定基准面，而不是浮动基准面。
By using the analysis which is analogous to the corresponding method for linear optimization;the iteration complexity of the new algorithm is shown to be O(nlognlog(n/ε)),which is currently the best known complexity for large-update methods.
利用类似于线性规划的相应算法的分析方法,证明了新算法具有目前最好的大步校正算法的迭代复杂性,即O(nlognlog(n/ε))。