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Subspace Fitting with Diversely Polarized Antenna Arrays
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- Swindlehurst, A. Lee (author)
- Brigham Young University, USA
-
- Viberg, Mats (author)
- Linköpings universitet,Reglerteknik,Tekniska högskolan
- (creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 1994
- 1994
- English.
- In: IEEE Transactions on Antennas and Propagation. - : Institute of Electrical and Electronics Engineers (IEEE). - 0018-926X .- 1558-2221. ; 41:12, s. 1687-1694
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Diversely polarized antenna arrays are widely used in RF applications. The diversity of response provided by diversely polarized antenna arrays can greatly improve direction-finding performance over arrays sensitive to only one polarization component. For d emitters, directly implementing a multidimensional estimation algorithm would require a search for 3d parameters: d directions of arrival (DOAs), and 2d polarization parameters. A more efficient solution is presented based on the noise subspace fitting (NSF) algorithm. It is shown how to decouple the NSF search into a two-step procedure, where the DOAs are estimated separately. The polarization parameters are then obtained by solving a linear system of equations. The advantage of this approach is that the search dimension is reduced by a factor of three, and no initial polarization estimate is required. The algorithm can be shown to yield asymptotically minimum variance estimates: provided no perfectly coherent signals are present. Simulation examples are included.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)
Keyword
- Antenna arrays
- Array signal processing
- Electromagnetic wave polarisation
- Parameter estimation
- Radio direction-finding
- Automatic control
- Reglerteknik
Publication and Content Type
- ref (subject category)
- art (subject category)
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