Accurate and low-cost DOA estimation method using array covariance matrix elements. - Yu Iwabuchi; Koichi Ichige (APCCAS, 2014)

Direction-of-arrival estimation of coherent sources for ULA based on the relation between array covariance matrix elements. - Yu Iwabuchi; Hanyang Li; Koichi Ichige (ISCCSP, 2014)

An efficient Direction-Of-Arrival estimation method for Uniform Rectangular Array based on array covariance matrix element properties. - Koichi Ichige; Yu Iwabuchi (CAMSAP, 2015)

Array Correlation Matrix Element Properties and Their Application to Low-Cost DOA Estimation. - Koichi Ichige; Yu Iwabuchi (IEICE Trans. Commun., 2016)