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Transformations for nonideal uniform circular arrays operating in correlated signal environments

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Author

Summary, in English

The Davies transformation is a method to transform the steering vector of a uniform circular array (UCA) to one with Vandermonde form. As such, it allows techniques such as spatial smoothing for direction-of-arrival (DOA) estimation in a correlated signal environment, developed originally for uniform linear arrays, to be applied to UCAs. However, the Davies transformation can be highly sensitive to perturbations of the underlying array model. This paper presents a method for deriving a more robust transformation using optimization techniques. The effectiveness of the method is illustrated through a number of DOA estimation examples.

Publishing year

2006

Language

English

Pages

34-48

Publication/Series

IEEE Transactions on Signal Processing

Volume

54

Issue

1

Document type

Journal article

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • uniform circular arrays (UCAs)
  • robustness
  • semi-infinite programming
  • quadratic
  • correlated signals
  • direction-of-arrival (DOA) estimation

Status

Published

ISBN/ISSN/Other

  • ISSN: 1053-587X