Joint polarization-DOA estimation using circle array

The algorithm of joint polarization-DOA estimation is presented in this article based on polarization sensitive circle array. This algorithm realizes polarization and DOA joint estimation by MUSIC, avoiding restriction to the array structure and parameter association of the ESPRIT. At the same time circle array assures the array´s effective aperture is invariant at the all directions, moreover comparing with normal array, the resolution of polarization sensitive array is much improved. The array is composed of crossed dipoles which distributed around the circle. Its availability is confirmed by computer simulation.