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Distributed reduced vector sensor for direction of arrival and polarization state estimation

In this article, a reduced vector sensor with six current dipoles located in a distributed way was proposed. Adopting ESPRIT and Eigen-value Decomposition of the space time matrix we constructed, the elevation, azimuth and the polarization state of the arrival can be estimated via the distributed reduced vector sensor considering about the short dipole patterns. The estimation errors of elevation, azimuth and polarization state were presented. This simple system which can estimate the handedness of circular polarization can be used in the application of polarization diversity.