1) focusing operator
聚焦算子
1.
CFP imaging techniques will separate pre-stack migration from velocity analysis recurring to two consecutive and independent focusing steps, and substitute operator updating for the direct updating of velocity filed in a traditional way, in the end calculate subsurface velocity filed using correctly updated focusing operator.
CFP成像技术借助于两个连续且相互独立的聚焦步骤 ,将叠前偏移与速度分析独立开来 ,并且用算子更新代替传统上对速度场的直接更新 ,最后从经过正确更新的聚焦算子反演出地下速度场。
2.
A series of focusing operators describing the effects of near surface were calculated, and these operators were then used to perform wavefield redu-tuming.
在起伏地表以下选定某一水平界面作为基准面,在基准面上求取一系列的聚焦算子,这些包含了起伏地表信息的聚焦算子可用来跟初始炮记录作用进行波场重建生成新的炮记录。
3.
The focusing operator was computed by finite-difference travel time method feasible to any rectangular grid and the CFP gather was generated by wave field continuation.
聚焦算子的计算采用适于任意矩形网格的有限差分走时计算法,用波场延拓法进行CFP道集的生成,利用约束参数迭代反演实现偏移速度的更新,模型的参数化主要依据实际情况而定。
2) multifocusing operator
多聚焦算子
3) inverse focusing operator
逆时聚焦算子
4) focus operator renewing
聚焦算子更新
5) focalization arithmetic
聚焦算法
1.
Study of an nuclear track image focalization arithmetic based on MATLAB;
基于MATLAB核径迹图像聚焦算法的研究
6) focus algorithm
聚焦算法
1.
When beginning to develop the autofocus system of a mic roscope, this paper adopts two common focus algorithms: the gray scale entropy and the gra y scale variance of image,but the autofocus system using these two common algor ithms is not very credible.
在开发普通光学显微镜自动聚焦系统的过程中 ,起初作者采用图像灰度熵和灰度方差这两种常用的显微镜聚焦算法 ,但实际应用效果不很理想。
补充资料:凹算子与凸算子
凹算子与凸算子
concave and convex operators
凹算子与凸算子「阴~皿d阴vex.耳阳.勿韶;.留叮.肠疽“‘.小啊j阅雌口叹甲司 半序空间中的非线性算子,类似于一个实变量的凹函数与凸函数. 一个Banach空间中的在某个锥K上是正的非线性算子A,称为凹的(concave)(更确切地,在K上u。凹的),如果 l)对任何的非零元x任K,下面的不等式成立: a(x)u。(Ax续斑x)u。,这里u。是K的某个固定的非零元,以x)与口(x)是正的纯量函数; 2)对每个使得 at(x)u。续x《月1(x)u。,al,月l>0,成立的x‘K,下面的关系成立二 A(tx))(l+,(x,t))tA(x),0
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参考词条