Název:
Spherical RBF interpolation employing particular geodesic metrics and trend functions
Autoři:
Segeth, Karel Typ dokumentu: Příspěvky z konference Konference/Akce: Programs and Algorithms of Numerical Mathematics /22./, Hejnice (CZ), 20240623
Rok:
2025
Jazyk:
eng
Abstrakt: The paper is concerned with spherical radial basis function (SRBF) interpolation. We introduce particular SRBF interpolants employing several different geodesic metrics and a single trend function. Interpolation on a sphere is an important tool serving to processing data measured on the Earth's surface by satellites. Nevertheless, our model physical quantity is the magnetic susceptibility of rock measured in different directions. We construct a general SRBF formula and prove conditions sufficient for its existence. Particular formulae with specified geodesic metrics, trend and SRBFs are then constructed and tested on a series of magnetic susceptibility examples. The results show that this interpolation is sufficiently robust in general.
Klíčová slova:
geodesic metric; radial basis function; spherical interpolation; spherical radial basis function Zdrojový dokument: Programs and Algorithms of Numerical Mathematics 22 : Proceedings of Seminar, ISBN 978-80-85823-74-5 Poznámka: Související webová stránka: http://dx.doi.org/10.21136/panm.2024.14
Instituce: Matematický ústav AV ČR
(web)
Informace o dostupnosti dokumentu:
Dokument je dostupný v repozitáři Akademie věd. Původní záznam: https://hdl.handle.net/11104/0368023