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Transformations for nonideal uniform circular arrays operating in correlated signal environments

Lau, Buon Kiong LU ; Leung, Y H; Liu, YQ and Teo, K L (2006) In IEEE Transactions on Signal Processing 54(1). p.34-48
Abstract
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.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
uniform circular arrays (UCAs), robustness, semi-infinite programming, quadratic, correlated signals, direction-of-arrival (DOA) estimation
in
IEEE Transactions on Signal Processing
volume
54
issue
1
pages
34 - 48
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000234755600004
  • scopus:30344471243
ISSN
1053-587X
DOI
10.1109/TSP.2005.861104
language
English
LU publication?
yes
id
2ece342d-0aad-43dc-b226-455e4c017fca (old id 419850)
date added to LUP
2007-10-08 12:30:25
date last changed
2018-10-03 11:32:48
@article{2ece342d-0aad-43dc-b226-455e4c017fca,
  abstract     = {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.},
  author       = {Lau, Buon Kiong and Leung, Y H and Liu, YQ and Teo, K L},
  issn         = {1053-587X},
  keyword      = {uniform circular arrays (UCAs),robustness,semi-infinite programming,quadratic,correlated signals,direction-of-arrival (DOA) estimation},
  language     = {eng},
  number       = {1},
  pages        = {34--48},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Signal Processing},
  title        = {Transformations for nonideal uniform circular arrays operating in correlated signal environments},
  url          = {http://dx.doi.org/10.1109/TSP.2005.861104},
  volume       = {54},
  year         = {2006},
}