Computationally efficient ESPRIT algorithm for direction-of-arrival estimation based on Nystrm method ?
The new method avoids estimating the whole sample covariance matrix and its EVD. The new method is more computationally efficient than the conventional methods. The new DOA estimation method has a very high estimation accuracy. The asymptotic variances of the proposed method are derived in this paper.
esprit direction-of-arrival signal subspace eigenvalue decomposition