NDLI: Steering vector modeling for polarimetric arrays of arbitrary geometry

Content Provider	IEEE Xplore Digital Library
Author	Costa, M. Richter, A. Koivunen, V.
Copyright Year	2010
Description	Author affiliation: Aalto University, Department of Signal Processing and Acoustics, SMARAD CoE, P.O. Box 3000, FIN-02015 TKK, Finland (Costa, M.; Richter, A.; Koivunen, V.)
Abstract	In this paper, the algebraic modeling of the steering vector for dual-polarized real-world arrays with unknown configuration is addressed. The formalism provided by the wavefield modeling theory is extended to vector-fields such as completely polarized electromagnetic waves. In particular, compact expressions for decomposing the array steering vector in different orthonormal basis functions are proposed. Such decompositions are shown to be equivalent under mild conditions that typically hold in practice. Recent results on algebraic modeling of sensor arrays are generalized to vector-fields and unified. These results allow for high-resolution direction-of-arrival and polarization estimation when array calibration measurement data is available only. We show that reduced computational complexity may be achieved by making use of the Fast Fourier Transform. Such computational savings may be obtained without compromising the performance of the estimation algorithms and irrespective of the antenna array configuration. The results in this paper contribute to array design as well by providing closed-form expressions for the array steering vector, which are useful in optimizing different array performance criteria. Simulations on direction-of-arrival and polarization estimation using a real-world polarimetric array are carried out, validating our analytical results.
Starting Page	265
Ending Page	268
File Size	292560
Page Count	4
File Format	PDF
ISBN	9781424489787
ISSN	2151870X
e-ISBN	9781424489770
e-ISBN	9781424493951
DOI	10.1109/SAM.2010.5606752
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-04
Publisher Place	Israel
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Arrays Harmonic analysis Matrix decomposition Antenna arrays Signal processing algorithms
Content Type	Text
Resource Type	Article

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