Localization of coherent signals without source number knowledge in unknown spatially correlated Gaussian noise

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

17 Scopus Citations
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Detail(s)

Original languageEnglish
Pages (from-to)170-178
Journal / PublicationSignal Processing
Volume111
Publication statusPublished - Jun 2015

Abstract

A new direction-of-arrival estimator for coherent signals in spatially correlated noise is devised in this paper. By constructing a set of fourth-order cumulant based Toeplitz matrices, the coherent signals can be decorrelated. Moreover, by utilizing the joint diagonalization structure of these Toeplitz matrices, a new cost function that does not require any a priori information of the source number is developed. Numerical examples are provided to demonstrate the effectiveness of the proposed approach.

Research Area(s)

  • Coherent signals, Direction-of-arrival (DOA) estimation, Fourth-order cumulant, Joint diagonalization, Toeplitz matrix