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Subspace Fitting with Diversely Polarized Antenna Arrays
Brigham Young University, USA.
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
1994 (English)In: IEEE Transactions on Antennas and Propagation, ISSN 0018-926X, E-ISSN 0096-1973, Vol. 41, no 12, 1687-1694 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
1994. Vol. 41, no 12, 1687-1694 p.
Keyword [en]
Antenna arrays, Array signal processing, Electromagnetic wave polarisation, Parameter estimation, Radio direction-finding
National Category
Control Engineering
URN: urn:nbn:se:liu:diva-56338DOI: 10.1109/8.273313OAI: diva2:318620
Available from: 2010-05-09 Created: 2010-05-07 Last updated: 2013-07-30

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ReferencesLink to record
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