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| 直射线CT技术的局限性 | |
| 引用本文： | 曹思远,李梦庚. 直射线CT技术的局限性[J]. 中国石油大学学报(自然科学版), 1992, 0(1) |
| 作者姓名： | 曹思远 李梦庚 |
| 作者单位： | 石油大学，胜利油田物探公司 北京 |
| 摘 要： | 分析了利用弯曲路径旅行时进行直射线反演的若干结果,对直射线CT技术的局限性进行了讨论.研究认为,对所讨论的区域而言,若介质速率的相对变化较大时,运用反演的结果不能很好地确定区域的内部结构;而当介质速率的相对变化较小时,对5m左右的薄层,它亦只能确定速度异常区的存在,而不能很好地确定其速度异常的数值. |
| 关 键 词： | CT技术 观测系统 图象处理 迭代 速度异常 [反演] |
LIMITATIONS OF THE STRAIGHT RAY CT TECHNIQUES |
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| Cao Siyuan Li Menggeng. LIMITATIONS OF THE STRAIGHT RAY CT TECHNIQUES[J]. Journal of China University of Petroleum (Edition of Natural Sciences), 1992, 0(1) | |
| Authors: | Cao Siyuan Li Menggeng |
| Abstract: | This paper analyzes several results of the straight ray problem solved by means of the travel time of bended paths, and discusses the limitations of the straight ray CT techniques. The results of inversion can not determine the internal structure of the discussed region , if the relative changes of media velocities in the region are large. If the relative changes are small, it can only ascertain the existence of abnormal velocity, but can not determine the value of abnormal velocity in a thin layer of about 5 meters in the region. |
| Keywords: | CT technique Observation system Image treatment Iteration Abnormal velocity |
| 本文献已被 CNKI 等数据库收录！ | |