Maximum-likelihood direction-of-arrival estimation in the presenceof unknown nonuniform noise
IEEE Transactions on Signal Processing
Gaussian Cramer-Rao bound for direction estimation of noncircular signals in unknown noise fields
IEEE Transactions on Signal Processing
Applications of cumulants to array processing. III. Blindbeamforming for coherent signals
IEEE Transactions on Signal Processing
Acoustic vector-sensor processing in the presence of a reflectingboundary
IEEE Transactions on Signal Processing
Vector-sensor array processing for electromagnetic sourcelocalization
IEEE Transactions on Signal Processing
Array processing in correlated noise fields based on instrumentalvariables and subspace fitting
IEEE Transactions on Signal Processing
Uniqueness study of measurements obtainable with arrays ofelectromagnetic vector sensors
IEEE Transactions on Signal Processing
Acoustic vector-sensor beamforming and Capon direction estimation
IEEE Transactions on Signal Processing
Identifiability in array processing models with vector-sensorapplications
IEEE Transactions on Signal Processing
Direction finding using noise covariance modeling
IEEE Transactions on Signal Processing
Applications of cumulants to array processing. II. Non-Gaussiannoise suppression
IEEE Transactions on Signal Processing
Improved angular resolution for spatial smoothing techniques
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
Near-field/far-field azimuth and elevation angle estimation using asingle vector hydrophone
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
Acoustic vector-sensor array processing
IEEE Transactions on Signal Processing
Noncircularity restoral for multi-antenna blind beamforming
Multidimensional Systems and Signal Processing
Narrowband signal detection techniques in shallow ocean by acoustic vector sensor array
Digital Signal Processing
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The main motivation of using an acoustic vector-sensor in direction-of-arrival (DOA) estimation applications has been its unambiguous two-dimensional directivity, insensitivity to the range of sources, and independence of signal frequency. The main objection lies in its lack of geometry-redundancy and limited degree of freedom. Four thus emerged challenging tasks and the corresponding solutions by recurring to the redundancies in the nonvanishing conjugate correlations of noncircular signals are described in the paper: (1) fulfilling source decorrelation in a multipath propagation environment; (2) enhancing processing capacity to accommodate more signals; (3) suppressing colored-noise with unknown covariance structure; and (4) deriving closed-form approaches to avoid iteration and manifold storage. Simulation experiments are carried out to examine the associated DOA estimators termed as: (1) phase-smoothing MUSIC (multiple signal classification); (2) virtual-MUSIC; (3) conjugate-MUSIC; and (4) noncircular-ESPRIT (estimation of signal parameters via rotational invariance techniques), respectively.