A novel DOA estimation technique for coherent real-valued sources

This paper proposes a new DOA estimation technique for coherent real-valued signal sources which is named Modified Covariance AR spectrum estimation of Modified Cross Correlation Sequence (MCCS-MC) algorithm. Firstly, we introduce the basic principle of the new technique: transform the DOA of the sources into frequency of a modified sequence, and get the arrival angles by power spectrum estimation of the sequence. Then we focus on the performance analysis of the proposed technique. Simulation results show that the algorithm not only solves the angle ambiguity problem in the DOA estimation of real-valued signals, but also precisely and stably estimates the arrival angles of coherent sine signals without spatial smoothing or matrix rebuilding.