【摘要】 运用ＣＴ技术中的傅利叶重建法，根据任意所给的两个初始速度模型，用几组平行射线束进行扫描，采集走时数据，并利用走时数据反演速度图象．反演结果与初始模型比较两者基本相符合。由此证明，傅利叶重建法在一定条件下可以用来反演地壳速度结构，并可得到较好的结果．这种方法是ＣＴ技术应用于地学研究的一种新的尝试．更多还原

【Abstract】 By using Fourior rebuilding method in CT technique,we have inverted the velocity pictures for two models with initial velocity given arbitrarily.To obtain the data,we use several groups of parallel rays to scan the models.The results basically coincide with the initial models.It proved that Fourior rebuilding method can be used in inverting crustal velocity structure and better result can also be got under certain conditions.This method is a new attempt on applying CT technique to the field of earth science.更多还原