DocumentCode :
1088606
Title :
Electromagnetic fields interpolation from nonuniform samples over spherical and cylindrical surfaces
Author :
Bucci, O.M. ; Gennarelli, C. ; Riccio, G. ; Savarese, C.
Author_Institution :
Dipartimento di Ingegneria Elettrica, Naples Univ., Italy
Volume :
141
Issue :
2
fYear :
1994
fDate :
4/1/1994 12:00:00 AM
Firstpage :
77
Lastpage :
84
Abstract :
Algorithms for the interpolation of electromagnetic fields from nonuniformly spaced samples over a sphere and over a cylinder are presented. They use an iterative technique and are based on optimal sampling expansions of central type. The algorithms have been found to be convergent if the average sample´s density is slightly higher than the Nyquist one and if it is possible to build a one-to-one correspondence between the nonuniform samples and a lattice of the uniform ones, by associating at each uniform sampling point the nearest nonuniform one. Many numerical simulations have assessed the rapid convergence of the method and have shown that the procedure is computationally much more efficient than the optimal linear estimation algorithm. Moreover, the proposed algorithms can be successfully applied to the case of interpolation from power samples and are stable with respect to both absolute and relative errors in the data
Keywords :
antenna theory; convergence of numerical methods; electromagnetic field theory; interpolation; iterative methods; convergence; cylinder; cylindrical surfaces; electromagnetic fields; interpolation; iterative technique; nonuniform sampling; nonuniformly spaced samples; numerical simulations; optimal sampling expansions; sphere; spherical surfaces;
fLanguage :
English
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
Publisher :
iet
ISSN :
1350-2417
Type :
jour
DOI :
10.1049/ip-map:19949838
Filename :
285810
Link To Document :
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