Robust DOA Estimation for Uncorrelated and Coherent Signals
Hui Chen, Qun Wan, Hongyang Chen, Tomoaki Otsuki Ohtsuki · IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences · 2011
A new direction of arrival (DOA) estimation method is introduced with arbitrary array geometry when uncorrelated and coherent signals coexist. The DOAs of uncorrelated signals are first estimated via subspace-based high resolution DOA estimation technique. Then a matrix that only contains the information of coherent signals can be formulated by eliminating the contribution of uncorrelated signals. Finally a subspace block sparse reconstruction approach is taken for DOA estimations of the coherent signals.