DOA estimation for uncorrelated and coherent signals based on Fourth-order Cumulants

This work aims to estimate the Direction-of-arrival (DOA) of uncorrelated and coherent signals based on Fourth-order Cumulant (FOC) and sparse reconstruction method. Firstly, a subspace method based on FOC matrix is proposed for estimating the DOAs of the uncorrelated signalsthen combining the FOC matrix of the coherent signals with sparse reconstruction theory, we obtain the DOAs information of the coherent signals by mapping a sparse vector. Simulation results are provided to demonstrate that our proposed method is not sensitive to the non-Gaussian signals and colored noise.