Polarimetric time-frequency ESPRIT.
An ESPRIT [Estimation of Signal Parameters via Rotational Invariance Techniques) like algorithm for estimating the direction-of-arrival [DOA) of nonstationary polarized signals is developed. This algorithm relies on the recently introduced spatial polarimetric tamefrequency distn'butions (SPTPD) as a platform to provide low computational, high resolution direction finding. The use oJdual polarizations empowers the SPTFD with additional degrees-of-freedom, and improves the TObustness of both the signal and noise subspaces. This imprnvement serves to enhance the DOA estimation? signal recovery, and source separation. In this paper the SPTFD are applied to the ESPRIT algorithm for improved angle-of-am'val estimation. Simulation results are provided which demonstrate the polarimetric timefrequency [PTF) ESPRIT resolution enhancement over the conventional ESPRIT, polarized ESPRIT, and timefrequency ESPRIT.
|Main Author:||Obeidat, Baha A.|
|Other Authors:||Zhang, Yimin., Amin, Moeness G.|