Transformations for nonideal uniform circular arrays operating in correlated signal environments
Författare
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.
Publiceringsår
2006
Språk
Engelska
Sidor
34-48
Publikation/Tidskrift/Serie
IEEE Transactions on Signal Processing
Volym
54
Issue
1
Fulltext
Dokumenttyp
Artikel i tidskrift
Förlag
IEEE - Institute of Electrical and Electronics Engineers Inc.
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Nyckelord
- uniform circular arrays (UCAs)
- robustness
- semi-infinite programming
- quadratic
- correlated signals
- direction-of-arrival (DOA) estimation
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1053-587X