2-D unitary matrix pencil method for efficient direction of arrival estimation

Nuri Yilmazer, Tapan K. Sarkar

Research output: Contribution to journalArticle

37 Scopus citations

Abstract

In this study, we extended the one-dimensional (1-D) unitary matrix pencil method (UMP) [N. Yilmazer, J. Koh, T.K. Sarkar, Utilization of a unitary transform for efficient computation in the matrix pencil method to find the direction of arrival, IEEE Trans. Antennas Propagat. 54 (1) (2006) 175-181] to two-dimensional case, where 2-D matrix pencil (MP) method are used to find the 2-D poles corresponding to the direction of arrival (DOA), azimuth and elevation angles, of the far field sources impinging on antenna arrays. This technique uses MP method to compute the DOA of the signals using a very efficient computational procedure in which the complexity of the computation can be reduced significantly by using a unitary matrix transformation. This method applies the technique directly to the data without forming a covariance matrix. Using real computations through the unitary transformation for the 2-D matrix pencil method leads to a very efficient computational methodology for real time implementation on a DSP chip. The numerical simulation results are provided to see the performance of the method.

Original languageEnglish (US)
Pages (from-to)767-781
Number of pages15
JournalDigital Signal Processing: A Review Journal
Volume16
Issue number6
DOIs
StatePublished - Nov 2006

Keywords

  • 2-D matrix pencil method
  • Centro-hermitian matrix
  • Matrix pencil method
  • Real valued computations
  • Simultaneous azimuth elevation angle estimation
  • Unitary transform

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering

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