Beamspace Modulated Circular Array

A Beamspace DOA Estimation Algorithm for Non-circular Signals

Beamspace Root-MUSIC (BM-RTMUSIC) algorithm cannot resolve coherent sources, and the use of spatial smoothing pre-process leads to array aperture loss and reduction in detectable source numbers, a new beamspace conjugate Root-MUSIC (BMC-RTMUSIC) algorithm is proposed to estimate the Direction-Of-Arrival (DOA) for non-circular signals. The proposed method employs the properties of noncircular si...

Eigenstructure beamspace root estimator bank with interpolated array

A beamspace root modification of PseudoRandom Joint Estimation Strategy (PR-JES) [1] is developed. The essence of PR-JES is to generate the eigenstructure-based estimator bank for given sample covariance or data matrix. Combining the results of “parallel” underlying estimators, PR-JES removes the outliers and improves the threshold performance. In the case of non-uniform array, the interpolated...

Beamspace Adaptive Beamforming for Hydrodynamic Towed Array Self-Noise Cancellation

.A beamspace adaptive beamformer implementation for the rejection of cable strum self-noise on passive sonar towed arrays is presented. The approach focuses on the implementation of a white noise gain constraint based on the scaled projection technique due to Cox et al. [IEEE Trans. on ASSP, Vol. 35 (10), Oct. 1987]. The objective is to balance the aggressive adaptation necessary for nulling th...

Circular array STAP

Direction Finding with Uniform Circular Arrays via Phase Mode Excitation and Beamspace Root-music

Beamspace Root-MUSIC is a computationally efficient, beamspace implementation of Root-MUSIC developed recently for use in conjunction with a uniform linear array (ULA). Employing B real-valued beams having all but B-1 nulls in common, the major computations in Beamspace Root-MUSIC are a BxB real-valued eigenvalue decomposition (EVD) and the rooting of a polynomial of order B-1. Recently, Beamsp...