Joint Angle-Polarization-Range Estimation for EVS-FDA-MIMO Radar

This paper deals with the problem of angle-polarization-range estimation with an electromagnetic vector sensor multiple-input multiple-output radar with frequency diverse array (EVS-FDA-MIMO). The EVS-FDA-MIMO radar can provide additional target polarization information, compared with FDA-MIMO radar, and distinguish different targets from the same range bin and angle but different ambiguous range regions, compared with EVS-MIMO radar. First, the FDA-MIMO radar introduces full component EVS spaced a half-wavelength that provides high accuracy and unambiguous estimates of angle polarization. Then, range estimation is obtained with the estimation of signal parameters via rotational invariance techniques (ESPRIT) algorithm using the rotational invariance of the transmitting array. Furthermore, the parameter pair matching is considered and the complexity of the proposed method is analyzed. Finally, numerical results are presented to validate the effectiveness of the proposed method.