Abstract

An improved MUSIC algorithm based on third-order cyclic moment is proposed to estimate the bearing and range parameters of near-field cyclostationary sources. The algorithm adopts the uniform linear array, structures the third-order cyclic moment matrix by the array outputs, and utilizes the propagator method to replace the singular value decomposition, calculate the signal noise subspace directly. Compared with the traditional MUSIC algorithm, the proposed algorithm has high estimation precision and low computational complexity, and effectively solves the two-dimensional parameters estimation problems of near-field cyclostationary sources in the case of interfering signals and non-Gaussian white noise. The performance of the proposed method can be verified by computer simulations.

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