基于波场上传试射的三维射线追踪方法  

3-D Ray Tracing Method Based on Wave Field Uploading Shooting

作　　者：辛全圣 贾雨[1] 舒引 

机构地区：[1]成都理工大学核技术与自动化工程学院,成都610059 [2]电子科技大学通信与信息工程学院,成都611731

出　　处：《四川理工学院学报（自然科学版）》2014年第3期34-37,41,共5页Journal of Sichuan University of Science & Engineering(Natural Science Edition)

摘　　要：传统的试射方法难以解决每一个炮检对存在多条射线的问题,而且每一次观测系统变化都需要进行试射和迭代的完整流程。基于波场上传试射的三维射线追踪方法,其基本思想是通过目标层控制点进行波场上传试射,并基于目标层针对每一个炮检对进行迭代,从原理上解决了每一个炮检对存在多条射线的问题,提高了CRP统计数据的准确度。同时,只要模型不变化,则试射结果一直有效;只要观测系统的炮位置不变化,则炮点到目标层控制点计算结果一直有效,提高了三维射线追踪的计算效率。数值模拟结果表明了该算法的有效性。There are multiple rays for each pair of source-receiver in the traditional shooting method,and it has to shoot and iterate again for every change of observation system. The basic idea of 3-D ray tracing method based on wave field uploading shooting is testing through the control points in target layer,and iterating each pair of source-receiver based on the target layer. It solves the problem in principle that multiple rays are existed in each pair of source-receiver,and enhances the accuracy of CRP statistics. At the same time,as long as the model does not change,the shooting result remains good. As long as the artillery position of observation system does not change,the result from shot point to the control point of target layer remains good,and the computational efficiency of 3-D ray tracing is enhanced. Numerical simulation results show the effectiveness of the algorithm.

关 键 词：三维射线追踪 波场上传 试射法 迭代 

分 类 号：P631.4[天文地球—地质矿产勘探]