A New Algorithm for Joint Range-DOA-Frequency Estimation of Near-Field Sources

Abstract

This paper studies the joint estimation problem of ranges, DOAs, and frequencies of near-field narrowband sources and proposes a new computationally efficient algorithm, which employs a symmetric uniform linear array, uses eigenvalues together with the corresponding eigenvectors of two properly designed matrices to estimate signal parameters, and does not require searching for spectral peak or pairing among parameters. In addition, the proposed algorithm can be applied in arbitrary Gaussian noise environment since it is based on the fourth-order cumulants, which is verified by extensive computer simulations.

Keywords

• array signal processing
• DOA estimate
• range estimate
• frequency estimate
• fourth-order cumulant.