作者: S. Kesler
DOI: 10.1109/ICASSP.1982.1171470
关键词:
摘要: Array beamforming employing nonlinear methods of spectral estimation presents a difficult problem when the spatial field is inhomogeneous, e.g., correlated multipath present, and hence, corresponding cross-spectral (CS) matrix non-Toeplitz. To overcome this difficulty in maximum entropy (ME) beamforming, we present generalization Burg algorithm for dealing with non-Toeplitz CS matrix. The stability minimum phase properties original are retained. use generalized elevation angle illustrated case passive sonar field. Statistical estimator analyzed using (1) uncorrelated Gaussian noise only, (2) direct specular components target signal, embedded directional ambient noise.