A Robust Phase-Ambiguity-Immune DOA Estimation Scheme for Antenna Array

A direction-of-arrival (DOA) estimation scheme that is immune to phase ambiguity is proposed for directional uniform circular array. The scheme is robust, and has the merits that no calibration is required when implemented by multi-channel receiver and can achieve multi-source DOA estimation when single-channel receiver is used. Via sparse signal representation, the proposed scheme is validated by computer simulations.