V. I. Vasylyshyn

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This paper addresses the problem of determining the directions-of-arrival (DOA's) of narrow-band emitter signals impinging on a sparse sensor array. We assume that array incorporates several identical widely separated subarrays. A TLS-ESPRIT-based DOA estimator is obtained for this class of sparse sensor arrays. The generalization of the TLS-ESPRIT that(More)
This paper addresses the problem of determining the directions-of-arrival (DOA's) of narrow-band emitter signals impinging on an antenna array. A modified beamspace MUSIC algorithm for high-resolution array processing is presented. Simulation results are included to show the improved performance of proposed estimator at threshold signal-to-noise ratio.
The problem of threshold performance improvement of direction finding using estimator bank approach is considered. The modified unitary Root-MUSIC estimator and pseudo-noise resampling are used to form the estimator bank. The classification of roots of the modified unitary Root-MUSIC polynomial based on their proximity to the unit circle is used on the(More)
A beamspace root modification of pseudorandom joint estimation strategy (PR-JES) with using of the outlier identification and cure technique is presented. This technique allows identifying and rectifying the outliers that can arise in the direction-of-arrival (DOA) estimation by eigenstructure methods. It improves the performance of beamspace root estimator(More)
The estimator bank approach allows improving the performance of direction of arrival (DOA) estimation in the area of low signal-to-noise ratio. In the paper, the estimator bank is formed from the modified Beamspace Root-MUSIC estimator using resampling by adding pseudo-noise. The illumination of outlying roots of the modified beamspace Root-MUSIC polynomial(More)
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