Efficient DOA estimation method employing Unitary improved polynomial rooting

Erwei Lin, Li Ba, Moshe Kam

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


High resolution direction-of-arrival (DOA) estimation is one of the most challenging problems in array signal processing. In this paper, a variation of the Improved Polynomial Rooting (IPR) method is proposed for DOA estimation of multiple targets by a sensor array. The variation, Unitary IPR (UIPR), transforms the complex-valued covariance matrix of the sensor signals to a real-valued matrix using unitary transformations. Then the IPR method is applied to determine the DOA of the targets. Simulation results indicate the potential improvement provided by our approach compared with MUSIC, Root-MUSIC, ESPRIT, and IPR.

Original languageEnglish (US)
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
StatePublished - Oct 7 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering

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