Beamspace conjugate MUSIC algorithm for non-circular signals

Aiming at non-circular signals form, the traditional beamspace method is specifically reconstructed for non-circular signals to solve the coherent signals. The method exploits the characteristics of non-circular signals to construct a conjugate symmetric Toeplitz matrix from received data. The resulted pseudo covariance matrix is then used by traditional beamspace MUSIC method to obtain the DOAs. This method avoids the array aperture loss and reduction in detectable target numbers encountered by the traditional beamspace MUSIC method. Simulation results show that the proposed method outerperforms the beamspace MUSIC method. It can resolve coherent signals by using only a few snapshots without spatial smoothing techniques.