| 波前构建法中的网格点定位(英文) |
| |
| 引用本文： | 韩复兴,孙建国,孙章庆,杨昊.波前构建法中的网格点定位(英文)[J].应用地球物理,2009,6(3):248-258. |
| |
| 作者姓名： | 韩复兴 孙建国 孙章庆 杨昊 |
| |
| 作者单位： | 韩复兴,孙建幽,孙章庆(吉林大学地球探测科学与技术学院,吉林长春,130026;国土资源部应用地球物理综合解释理论开放实验室-波动理论与成像技术实验室,吉林长春,130026);杨昊(中国石油勘探开发研究院,北京,100083) |
| |
| 基金项目： | supported by the Projects of National Science Foundation of China (Grant No.40574052 and 40437018); National Basic Research Program of China (973 Program) (Grant No.2007CB209603) |
| |
| 摘 要： | 针对波前构建法中非规则的波前四边形网格与规则的矩形网格节点之间的相对定位问题,对比分析了在计算机图形学中常用的四种网格定位方法(叉乘判断法、夹角之和检验法、射线法(交点计数检验法)以及符号比较法)在波前构建法中的具体实现问题,通过对定位方法稳健性分析及计算实例表明,矢量叉乘判断法在实现规则的矩形网格节点与非规则的波前四边形网格相对定位研究中,其稳健性和计算效率足最高的,从而为下一步做偏移或者反偏移提供了精确的网格点属性值.
|
| 关 键 词： | 波前构建 网格定位 网格节点 波前四边形 |
Positioning of grid points in wave front construction |
| |
| Fuxing Han,Jianguo Sun,Zhangqing Sun,Hao Yang.Positioning of grid points in wave front construction[J].Applied Geophysics,2009,6(3):248-258. |
| |
| Authors: | Fuxing Han Jianguo Sun Zhangqing Sun Hao Yang |
| |
| Institution: | Han Fuxing1,2,Sun Jianguo1,Sun Zhangqing1,, Yang Hao31.College for Geoexploration Science Technology,Jilin University,Changchun,130026.2.Laboratory for Integrated Geophysical Interpretation Theory of Ministry for L, , Resources,130026.3.Research Institute of Petroleum Exploration , Development,China,Beijing,100083. |
| |
| Abstract: | In view of the relative positioning problem between non-regular quadrilateral grids and regular rectangle grid nodes in the wave front construction method,concrete realization problems with four grid positioning methods(vector cross product judgment,angle sum,intersection-point,and signs comparison algorithms) in wave front construction which are commonly used in computer graphics are compared and analyzed in this paper.Based on the stability analysis of the location method,the calculation examples show tha... |
| |
| Keywords: | wave front construction grid localization grid nodes wave front quadrilateral |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ |
|
