Direction estimation of uncorrelated and coherent narrowband signals with uniform linear array

• Published in: 2011 1st International Symposium on Access Spaces (ISAS) pp. 101 - 104
• Main Authors: Guangmin Wang, Jingmin Xin, Chenyang Ge, Nanning Zheng, Sano, A.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-06-2011
• Subjects: Arrays; Covariance matrix; Direction of arrival estimation; Estimation; Gold; Signal to noise ratio; Smoothing methods
• ISBN: 1457707160; 9781457707162
• DOI: 10.1109/ISAS.2011.5960928

In this paper, an effective direction-of-arrival (DOA) estimation method is proposed with a uniform linear array (ULA) when uncorrelated and coherent signals coexist. The direction-of-arrivals (DOAs) of uncorrelated signals and coherent signals are estimated in two steps. The DOAs of uncorrelated signals are estimated using conventional subspace method firstly, then the information of the uncorrelated signals can be eliminated by using matrix difference technique, and finally the coherent signals are decorrelated to be estimated. The theoretical analysis and simulation results show that the proposed method is effective.