Localized polynomial bases on the sphere
Electronic transactions on numerical analysis, Tome 19 (2005), pp. 84-93
The subject of many areas of investigation, such as meteorology or crystallography, is the reconstruction of a continuous signal on the -sphere from scattered data. A classical approximation method is $polynomial\textcent interpolation$. Let denote the space of polynomials of degree at most on the unit sphere . As it is $\sterling $############# §$\copyright \ddot $ well known, the so-called $spherical harmonics$ form an orthonormal basis of the space . Since these functions $\sterling $### exhibit a poor localization behavior, it is natural to ask for better localized bases. Given , "! 7§$8\ddot #\\%(' ) ) ) ' 0 \%4365 $textcent$CQ2RTS $
Classification :
41A05, 65D05, 15A12
Keywords: fundamental systems, localization, matrix condition, reproducing kernel
Keywords: fundamental systems, localization, matrix condition, reproducing kernel
@article{ETNA_2005__19__a3,
author = {La{\'\i}n Fern\'andez, Noem{\'\i}},
title = {Localized polynomial bases on the sphere},
journal = {Electronic transactions on numerical analysis},
pages = {84--93},
year = {2005},
volume = {19},
zbl = {1083.41003},
language = {en},
url = {http://geodesic.mathdoc.fr/item/ETNA_2005__19__a3/}
}
Laín Fernández, Noemí. Localized polynomial bases on the sphere. Electronic transactions on numerical analysis, Tome 19 (2005), pp. 84-93. http://geodesic.mathdoc.fr/item/ETNA_2005__19__a3/