Computationally efficient high-resolution DOA estimation in multipath environment
E.M. Al-Ardi, Raed M. Shubair, Mohammed Ebrahim Al-Mualla · Electronics Letters · 2004
A computationally efficient direction of arrival (DOA) estimation algorithm using a linear array of equispaced sensors is proposed for a multipath environment with unknown correlated signals. The algorithm comprises two stages: a first stage for discriminating uncorrelated signals, and a second stage for resolving the directions of arrival of the correlated signals using covariance differencing and iterative spatial smoothing. Simulation results show that the proposed algorithm operates at a much lower computational cost compared to standard methods.