Joint DOD and DOA estimation using 2-D unitary esprit for bistatic MIMO radar

It is shown how bistatic MIMO radar with uniform linear may be used with the data extension technique and 2-D unitary ESPRIT algorithm to estimate the joint direction of departure (DOA) and direction of arrival (DOD). First, channel matrix is estimated from the receive data matrix by a match filtering process. Second, to improve the performance, the forward-backward averaging technique is exploited to extend the reconstructed Hankel matrix which is constructed using virtue of the shift-invariant structure of the spatial channel matrix. Third, after real process, a closed-form solution of DOA and DOD of targets is obtained. Then, the RCS of targets are estimated by exploiting the solution of DOA and DOD. Finally, simulation results are presented to validate the proposed method.