Abstract:

A novel joint estimation algorithm of 2-D azimuth and Doppler frequency for bistatic multiple-input multiple-output (MIMO) radar is proposed. The proposed algorithm can “decouple” the direction of departure (DOD) and direction of arrival (DOA) based on the m-Capon method, and then Doppler frequency can be estimated accurately through the estimation of DOD and DOA, so the estimated DODs, DOAs and Doppler frequencies can be automatically paired. The proposed algorithm skips targets number estimation and the eigen value decomposition (EVD) of data covariance matrix estimation, and the joint estimation of 2-D azimuth and Doppler frequency only needs a one dimensional search, with no high-dimensional nonlinear search, therefore, it can reduce the computational complexity. Furthermore, the proposed algorithm is suitable for bistatic MIMO radar with arbitrary transmitted and received geometrical configuration. The correction and efficiency of the proposed method are verified by the computer  imulation results.