Efficient Method for Estimating Directions- of-Arrival of Partially Polarized Signals with Electromagnetic Vector Sensors

Abstract—We have developed a high-resolution ESPRIT-based method for estimating the directions-of-arrival of partially polar-ized signals with electromagnetic vector sensors, each of which provides measurements of the complete electric and magnetic fields induced by electromagnetic signals. The method is com-putationally efficient since unlike many high-resolution methods, it does not involve searching across a multidimensional array manifold. In addition, the method has two variants, of which one is applicable to scenarios where a priori information about the array system, such as the sensor positions, is unavailable. I