A Robust DOA Estimation Based on Sigmoid Transform in Alpha Stable Noise Environment

Publisher: Edp Sciences

E-ISSN: 2261-236x|173|issue|02006-02006

ISSN: 2261-236x

Source: MATEC Web of conference, Vol.173, Iss.issue, 2018-06, pp. : 02006-02006

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Abstract

To suppress alpha-stable noise and co-channel interference, this paper defines a novel cyclic correlation function, and proposes a new MUSIC algorithm based on sigmoid cyclic correlation function. Furthermore, the proposed algorithm (SCC-MUSIC) is applied to estimate direction of arrival (DOA) in alpha stable distribution noise. Simulation results demonstrate that the proposed SCC-MUSIC can get a better performance than several existing algorithms especially in the highly impulsive noise environments.