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The authors present a 2D-MUSIC processing for the simultaneousestimation of angular and range target positions. A2D spatial smoothing technique is also introduced in orderto cope with the coherent behavior of the received echoes, which may result in a rank deficiency of the signals covariancematrix. The algorithm is analyzed with respect to its application to coherent MIMO arrays. The extended baseline which is synthesised can indeed be used to further increasethe performances of the system. Results of the algorithmare shown for both simulated and experimental data scenarios. In the latter case, the data are collected by an FMCW radar with MIMO functionality that has been designedand realized in cooperation with TNO, the Netherlands.
Belfiori et al. (Sun,) studied this question.