Transformations for nonideal uniform circular arrays operating in correlated signal environments
Publikation/Tidskrift/Serie: IEEE Transactions on Signal Processing
Dokumenttyp: Artikel i tidskrift
Förlag: IEEE--Institute of Electrical and Electronics Engineers Inc.
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.
- Electrical Engineering, Electronic Engineering, Information Engineering
- uniform circular arrays (UCAs)
- semi-infinite programming
- correlated signals
- direction-of-arrival (DOA) estimation
- ISSN: 1053-587X