Joint 4-D Angle and Doppler Frequency Estimation for Bistatic MIMO Radar

A novel joint 4-Dimensional (4-D) angle and Doppler frequency estimation algorithm is proposed for bistatic MIMO radar with L-shaped arrays. The DOA matrix method is used to construct the date model and then the close-form solution of the two dimensional DOA, the two dimensional DOD and Doppler frequency can be obtained. The proposed algorithm requires no searching spectral peak, and the estimated five dimensional parameters of the targets can be paired automatically. The proposed algorithm has very close parameters estimation to ESPRIT algorithm which has a much higher complexity than the algorithm. The method can eliminate the effect of the spatial colored noise and it is applicable even if the transmitted waveforms are not entirely orthogonal. The simulation results verify its effectiveness.