The estimation of structured covariances for use in array beamforming
DA Gray, Brian D. O. Anderson, PK Sim · 1st IASTED International Symposium on Signal Processing and its Applications · 1987
In frequency-domain array beamforming the output power can be written as an Hermitian form of the cross-spectral matrix of the receiver outputs for both conventional and optimum beamforming algorithms [1-3], Furthermore, in a number of bearing estimation algorithms [4-5] the eigenvalues and eigenvectors of the cross-spectral matrix play a central role.