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Transformations for...
Transformations for nonideal uniform circular arrays operating in correlated signal environments
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- Lau, Buon Kiong (author)
- Lund University,Lunds universitet,Institutionen för elektro- och informationsteknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Electrical and Information Technology,Departments at LTH,Faculty of Engineering, LTH
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- Leung, Y H (author)
- Curtin University
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- Liu, YQ (author)
- RMIT University
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- Teo, K L (author)
- Hong Kong Polytechnic University
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(creator_code:org_t)
- 2006
- 2006
- English.
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In: IEEE Transactions on Signal Processing. - 1053-587X. ; 54:1, s. 34-48
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Abstract
Subject headings
Close
- 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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- uniform circular arrays (UCAs)
- robustness
- semi-infinite programming
- quadratic
- correlated signals
- direction-of-arrival (DOA) estimation
Publication and Content Type
- art (subject category)
- ref (subject category)
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