Том: 21st International Conference on Computational Science and Its Applications, ICCSA 2021. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Cagliari, Italy, September 13-16, 2021)
Том: 12950
, Год издания: 2021
Многотомное издание: 21st International Conference on Computational Science and Its Applications, ICCSA 2021. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Cagliari, Italy, September 13-16, 2021)
Страницы: 311-321
Аннотация
We suggest solving the two-point ray tracing problem for a 3D medium using the bending method, which considers the band-limited nature of real seismic signals. It is based on a modified Fermat's principle. As a result, one may obtain more reliable ray paths and traveltimes in complex mediums. Chebyshev polynomials for model parameterization provide considerable algorithmic advantages for the two-point ray tracing based on the bending method because traveltimes and their derivatives with respect to ray parameters can be calculated analytically. Hence nonlinear conjugate gradient method can be applied efficiently for ray computation. 3D numerical experiments prove the efficiency of the proposed approach.
