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Array signal processing with non-ideal uniform circular arrays in correlated signal environments

Publiceringsår: 2004
Språk: Engelska
Dokumenttyp: Konferensbidrag


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. In this paper, we present 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.



  • Technology and Engineering


2nd Industrial Optimization Symposium
Perth, Australia
  • Radio Systems
  • Electromagnetic theory

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