Improvement of resolution in equivalent currents reconstruction using Papoulis-Gerchberg algorithm and replicas of the spectrum |
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Authors: | Sanchez D Baquero M Gonzalez D Alfonso E |
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Affiliation: | Univ. Politec. de Valencia, Valencia; |
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Abstract: | A new algorithm to increase the resolution in the reconstruction of equivalent currents from spherical near-field measurements is proposed. The algorithm obtains the non-visible part of the plane- wave spectrum used for the reconstruction. This is achieved by means of a band-limited extrapolation method, the Papoulis-Gerchberg algorithm, and the replication of the known part of the spectrum. The gain in resolution is from llambda in the method without the algorithm proposed, to 0.4-0.51 with this new algorithm. Results with real measurements are shown. |
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