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Algebraic formulation of Kumaresan-Tufts superresolution method, showing relation to ME and MUSIC methods

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1 Author(s)
Nickel, U. ; Forschungsinst. fur Funk und Math., Wachtberg-Werthhoven, West Germany

Gives a new formulation for the Kumaresan-Tufts (KT) method for enhanced resolution with an antenna array. This formulation shows the relation of this method to the maximum-entropy (ME) method and the eigenvector projection method (MUSIC algorithm). It is shown that the eigenvector projection is a smoothed version of the KT method, and that the KT method is equivalent to the ME method if the signal/noise ratio goes to infinity. This explains the observed increased resolution of the KT method at the expense of a strongly fluctuating pattern. The relation is very similar to the one between Capon's method and the ME method.

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Radar and Signal Processing, IEE Proceedings F  (Volume:135 ,  Issue: 1 )