Direction-of-arrival estimation for noncircular signals

Abstract

Direction-of-arrival (DOA) estimation for nearcompletely noncircular signals is considered in this paper, and two DOA estimators based on Widely Linear Minimum Variance Distortionless Response (WL-MVDR) beamforming are proposed, called the spatial conjugate power spectrum (SCPS) method and subspace matching (MBNB) method, respectively.The performance of the proposed DOA estimators is illustrated via numerical examples and compared with other estimators.