A pencil-MUSIC algorithm for finding two-dimensional angles and polarizations using crossed dipoles

The authors study the problem of finding two-dimensional (2-D) angles of wave arrival and wave polarizations using a uniform rectangular array of crossed dipoles. The method presented effectively exploits the redundancy in this array via 2-D moving-window smoothing to handle coherent sources and to achieve optimum noise sensitivity. The method combines the computational advantages of the MUSIC and matrix pencil approaches. The method is shown in simulation to be nearly optimum compared with the Cramer-Rao bound