湖南大学学报（自然科学版）Issue(1)：39-44,6.
线性走时插值射线追踪算法的改进
Improvement of Ray Tracing Algorithm Based on Linear Traveltime Interpolation
摘要
Abstract
The extension & compaction scanning algorithm based on LTI (Linear Travel-time Interpo-lation)ray tracing algorithm can properly trace the ray path of the direct wave,diffraction wave and echo 's,but it has the following problems:low computational efficiency and slow convergence speed.Aiming at these problems and using the cross-scan mode to improve the algorithm,an improved extension &compac-tion scanning algorithm based on the cross-scan mode was presented.Theoretical analysis and the results of numerical calculation show that the improved algorithm not only maintains all the advantages of the ex-tension & compaction scanning algorithm,but also has a higher computational efficiency.When the model is mesh more refined,the advantage of the improved algorithm is more significant in computational efficien-cy.关键词
射线追踪/LTI算法/交叉扫描/扩张/收缩扫描法/改进算法Key words
ray tracing/LTI algorithm/cross-scan/extension & compaction scanning algorithm/im-proved algorithm分类
建筑与水利引用本文复制引用
卢江波,方志..线性走时插值射线追踪算法的改进[J].湖南大学学报（自然科学版）,2014,(1):39-44,6.基金项目
国家自然科学基金资助项目(51278182) （51278182）
