Generalized sampling expansion for functions on the sphere


Ben Hagai, Ilan, Fazi, Filippo Maria and Rafaely, Boaz (2012) Generalized sampling expansion for functions on the sphere IEEE Transactions on Signal Processing, 60, (11), pp. 5870-5879. (doi:10.1109/TSP.2012.2210549).

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Description/Abstract

Functions on the sphere appear in several applications, including geodesics, imaging and acoustics. Sampling of these functions may result in aliasing if the sampling condition is not met. The generalized sampling expansion introduced by Papoulis enables the reconstruction of a band-limited function sampled at a frequency lower than the Nyquist frequency using the outputs of several linear time-invariant systems. This paper formulates the generalized sampling expansion for functions on the sphere using spherical harmonics decomposition, facilitating sub-Nyquit sampling without aliasing error. An analysis of linear systems on the sphere and the aliasing phenomenon in the spherical harmonics domain is presented. Examples demonstrating the performance of the method and its limitations are studied.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1109/TSP.2012.2210549
ISSNs: 1053-587X (print)
Subjects: Q Science > QA Mathematics
Q Science > QC Physics
Organisations: Acoustics Group
ePrint ID: 343518
Date :
Date Event
27 July 2012e-pub ahead of print
November 2012Published
Date Deposited: 08 Oct 2012 14:21
Last Modified: 17 Apr 2017 16:33
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/343518

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