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Possibilities for separation of scalar and vector characteristics of acoustic scatterer in tomographic polychromatic regimeстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 15 июля 2021 г.
- Авторы: Rumyantseva Olga D., Shurup Andrey S., Zotov Dmitriy I.
- Журнал: Journal of Inverse and Ill-Posed Problems
- Том: 29
- Номер: 3
- Год издания: 2021
- Издательство: V S P
- Местоположение издательства: Netherlands
- Первая страница: 407
- Последняя страница: 420
- DOI: 10.1515/jiip-2020-0141
- Аннотация: The inverse wave problem of tomographic type is considered. It consists in reconstruction of several scatterer’s characteristics in the form of spatial distributions for sound speed, medium density, absorption coefficient and power index of its frequency dependence, as well as vector of flow velocity. In the form of a survey material, a sequence of actions is discussed that leads to reconstruction of each individual spatial distribution in the presence of different combinations of the mentioned characteristics. The minimum number of frequencies required for reconstruction is discussed when the complete set of scattering data is available at each of the frequencies. For the first time, two possible approaches to reconstruct the scatterer characteristics in the presence of inhomogeneous spatial distributions of the density and the flow velocity vector are compared, and attention is drawn to the perspectives of reconstruction by functional algorithms in this case. The possibility of separating the sought spatial distributions during the inverse problem solution is illustrated by numerical modeling.
- Добавил в систему: Шуруп Андрей Сергеевич