METHOD OF ESTIMATING DIRECTION OF ARRIVAL AND APPARATUS THEREOF

A method includes generating a correlation vector of baseband-signal vectors based upon signals received from a plurality of sensor devices, generating a generalized Hankel matrix R representing a covariance matrix to which a spatial averaging is applied based upon the correlation vector, generating a kernel matrix Ω1, which is a projection matrix onto noise subspace, by performing linear operation using submatrices R1 and R2 of the generalized Hankel matrix R, generating a kernel matrix Ω2, which is orthogonal with the kernel matrix Ω1, and estimating a direction of arrival of a signal based upon the kernel matrices Ω1 and Ω2.