Abstract:

To solve the problem of angle estimation for bistatic multiple input multiple output (MIMO) radar, a new method based on improved fourthorder cumulants (FOC) for joint direction of department (DOD) and direction of arrival (DOA) estimation is proposed in the presence of colored noise. A FOC matrix of the echoed signal is firstly constructed. Then, according to the constructed law of the FOC matrix, redundant information is removed to reduce its dimension, while the effective aperture of the virtual array keeps unchanged. Finally, the noise subspace is derived by eigenvalue decomposition, and angle estimation is realized according to the multiple signal classification (MUSIC) algorithm based on FOC. The proposed method can suppress the effect of Gaussian colored noise, and reduce the computational complexity by reducing the dimension of the FOC matrix. Simulation results verify that the proposed method is effective.