Direct Method for Identification of Two Coefficients of Acoustic Equation Научная публикация
| Журнал |
Mathematics
, E-ISSN: 2227-7390 |
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| Вых. Данные | Год: 2023, Том: 11, Номер: 13, Страницы: 3029 Страниц : 16 DOI: 10.3390/math11133029 | ||||||
| Ключевые слова | acoustic equation; inverse problems; direct methods; integral equations | ||||||
| Авторы |
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| Организации |
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Информация о финансировании (1)
| 1 | Российский научный фонд | 20-71-00128 |
Реферат:
We consider the coefficient inverse problem for the 2D acoustic equation. The problem is recovering the speed of sound in the medium (which depends only on the depth) and the density (function of both variables). We describe the method, based on the Gelfand–Levitan–Krein approach, which allows us to obtain both functions by solving two sets of integral equations. The main advantage of the proposed approach is that the method does not use the multiple solution of direct problems, and thus has quite low CPU time requirements. We also consider the variation of the method for the 1D case, where the variation of the wave equation is considered. We illustrate the results with numerical experiments in the 1D and 2D case and study the efficiency and stability of the approach
Библиографическая ссылка:
Novikov N.
, Shishlenin M.
Direct Method for Identification of Two Coefficients of Acoustic Equation
Mathematics. 2023. V.11. N13. P.3029. DOI: 10.3390/math11133029 WOS Scopus РИНЦ OpenAlex
Direct Method for Identification of Two Coefficients of Acoustic Equation
Mathematics. 2023. V.11. N13. P.3029. DOI: 10.3390/math11133029 WOS Scopus РИНЦ OpenAlex
Даты:
| Поступила в редакцию: | 4 мая 2023 г. |
| Принята к публикации: | 3 июл. 2023 г. |
| Опубликована в печати: | 7 июл. 2023 г. |
| Опубликована online: | 7 июл. 2023 г. |
Идентификаторы БД:
| Web of science: | WOS:001028277000001 |
| Scopus: | 2-s2.0-85164954717 |
| РИНЦ: | 62239858 |
| OpenAlex: | W4383736541 |