NDLI: FCA-ESPRIT: a closed-form 2-D angle estimation algorithm for filled circular arrays with arbitrary sampling lattices

Content Provider	IEEE Xplore Digital Library
Author	Ramos, J. Mathews, C.P. Zoltowski, M.D.
Copyright Year	1991
Abstract	This article addresses the simultaneous estimation of the azimuth and elevation angles of multiple co-channel signals incident upon an array of antennas. A new closed-form algorithm that is applicable with filled circular arrays (FCAs) is presented. The algorithm, which is called FCA-ESPRIT, is applicable with any FCA geometry, e.g., FCAs constructed using rectangular, hexagonal, polar, or random sampling lattices. The only constraint imposed on the FCA geometry is that the spacing between adjacent sensors should be half a wavelength or less on average across the entire aperture. The algorithm provides automatically paired azimuth and elevation angle estimates by solving a set of ESPRIT-like equations wherein the unknowns have the form sin(/spl theta//sub i/)e/sup j/spl phi/(i)/ (where /spl theta//sub i/ and /spl phi//sub i/ are the elevation and azimuth angles of the ith source, respectively). The algorithm provides arrival angle estimates via a closed-form procedure-it does not require computationally expensive search or optimization procedures.
Sponsorship	IEEE Signal Processing Society
Starting Page	213
Ending Page	217
Page Count	5
File Size	241519
File Format	PDF
ISSN	1053587X
Volume Number	47
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal processing algorithms Antenna arrays Apertures Azimuth Sampling methods Lattices Geometry Radar antennas Radar signal processing Coordinate measuring machines
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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