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《Journal of Hunan University(Natural Sciences)》 2014-01
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Improvement of Ray Tracing Algorithm Based on Linear Traveltime Interpolation

LU Jiang-bo;FANG Zhi;College of Civil Engineering,Hunan Univ;  
The extension compaction scanning algorithm based on LTI(Linear Travel-time Interpolation)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 compaction 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 extension 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 efficiency.
【Fund】: 国家自然科学基金资助项目(51278182)
【CateGory Index】: TU317
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