Title :
Inverse Source Problem in an Oblate Spheroidal Geometry
Author :
Sten, Johan C E ; Marengo, Edwin A.
Author_Institution :
Inf. Technol., Tech. Res. Centre of Finland, Espoo
Abstract :
The canonical inverse source problem of reconstructing an unknown source whose region of support is describable as a spheroidal (oblate or prolate) volume from knowledge of the far-field radiation pattern it generates is formulated and solved within the framework of the inhomogeneous scalar Helmholtz equation via a linear inversion framework in Hilbert spaces. Particular attention is paid to the analysis and computer illustration of flat, aperture-like sources whose support is approximated by an oblate spheroidal volume
Keywords :
Helmholtz equations; Hilbert spaces; antenna radiation patterns; antenna theory; aperture antennas; approximation theory; inhomogeneous media; inverse problems; Hilbert space; aperture-like source; approximation; canonical inverse source problem; far-field radiation pattern; flat source; inhomogeneous scalar Helmholtz equation; linear inversion framework; oblate spheroidal geometry; Apertures; Focusing; Geometry; Helium; Hilbert space; Information technology; Laplace equations; Needles; Q factor; Shape; Inverse source problem; minimum energy source; nonradiating source; spheroidal wave;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2006.884292