Robust approximate median beamforming for phased array radar with antenna switching

Authors:
Moon-Sik Lee;Vladimir Katkovnik;Yong-Hoon Kim
Affiliations:
Department of Mechatronics, Gwangju Institute of Science and Technology (GIST), 1 Oryong-dong, Buk-gu, Gwangju 500-712, Republic of Korea;Signal Processing Lab (TICSP), Tampere University of Technology, Tampere, Finland;Department of Mechatronics, Gwangju Institute of Science and Technology (GIST), 1 Oryong-dong, Buk-gu, Gwangju 500-712, Republic of Korea
Venue:
Signal Processing - Special section: New trends and findings in antenna array processing for radar
Year:
2004

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Abstract

We propose a new robust beamformer for estimating movement parameters in impulsive noise environments using a phased array radar with antenna switching. The radar system is composed of a single transmitter, M receiving antennas, and a single receiver. The proposed beamformer is implemented as an approximate median algorithm and uses a three-dimensional power function. Maximum peaks of this power function are used for estimation of the angle, velocity and range of multiple moving targets. It is shown in simulation experiments that the new robust beamformer demonstrates a high accuracy in estimation of movement parameters and has a decreased sensitivity of the estimates with respect to noise components having heavy-tailed distributions.