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

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.