NDLI: Spatial polarimetric time-frequency distributions for direction-of-arrival estimations

Content Provider	IEEE Xplore Digital Library
Author	Yimin Zhang Obeidat, B.A. Amin, M.G.
Copyright Year	1991
Abstract	Time-frequency distributions (TFDs) are traditionally applied to a single antenna receiver with a single polarization. Recently, spatial time-frequency distributions (STFDs) have been developed for receivers with multiple single-polarized antennas and successfully applied for direction-of-arrival (DOA) estimation of nonstationary signals. In this paper, we consider dual-polarized antenna arrays and extend the STFD to utilize the source polarization properties. The spatial polarimetric time-frequency distributions (SPTFDs) are introduced as a platform for processing polarized nonstationary signals, which are received by an array of dual-polarized double-feed antennas. This paper deals with narrow-band far-field point sources that lie in the plane of the receiver array. The source signals are decomposed into two orthogonal polarization components, such as vertical and horizontal. The ability to incorporate signal polarization empowers the STFDs with an additional degree of freedom, leading to improved signal and noise subspace estimates for direction finding. The polarimetric time-frequency MUSIC (PTF-MUSIC) method for DOA estimation based on the SPTFD platform is developed and shown to outperform the time-frequency, polarimetric, and conventional MUSIC techniques, when applied separately.
Sponsorship	IEEE Signal Processing Society
Starting Page	1327
Ending Page	1340
Page Count	14
File Size	1373127
File Format	PDF
ISSN	1053587X
Volume Number	54
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Time frequency analysis Polarization Direction of arrival estimation Multiple signal classification Directive antennas Receiving antennas Antenna arrays Sensor arrays Covariance matrix Signal processing time-frequency distributions (TFDs) Array signal processing direction-of-arrival (DOA) estimation MUSIC polarization smart antennas
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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