On arrays with small loops and short dipoles

The author shows that when polarization sensitive arrays consisting of crossed small loops and short dipoles are used, one can eliminate the requirement in the ESPRIT algorithm that sensors must occur in matched pairs. The dipoles are sensitive to the incident electric field components, and the loops to magnetic field components of the incident waves. The invariance properties are exploited among the dipole and loop outputs of an arbitrary array of orthogonal loops and orthogonal dipoles to compute both the two-dimensional arrival angles and polarization of incoming narrowband signals.<>