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Author Sarac, U. ♦ Harmanci, F.K. ♦ Akgul, T.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2008
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Arrays ♦ Correlation ♦ Music ♦ Antenna arrays ♦ Noise ♦ Smoothing methods ♦ Signal processing ♦ multipath ♦ Direction finding ♦ likelihood ratio ♦ antenna array ♦ MUSIC
Abstract In this paper, we present a new application of the likelihood ratio test to solve the problem of enumeration and localization of multiple emitters (sources) with a uniform linear antenna array in a multi-path environment. First, spatial smoothing is applied to the antenna array data to decorrelate signals corresponding to each path in the estimated correlation matrix and the number of paths is then counted using an information theoretic criterion. Then, MUSIC is applied with this correlation matrix to estimate the angle of arrival of all possible incident paths. In our signal model, we assume that the correlation between signals from two paths is one if they originate from the same source but zero if they are from different sources. The likelihood ratio test is then applied to each path pair using this correlation model and the angles of arrival estimated by MUSIC in order to find out if the path pair originates from the same emitter, and hence the number of emitters and their angles of arrival are estimated. The proposed algorithm on the likelihood ratio test is compared with the correlation coefficient algorithm based on minimum variance beamforming with a performance analysis.
Description Author affiliation: Dept. of Electron. & Commun. Eng., Istanbul Tech. Univ., Istanbul (Sarac, U.)
ISBN 9781424422401
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2008-07-21
Publisher Place Germany
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 1.37 MB
Page Count 4
Starting Page 419
Ending Page 422


Source: IEEE Xplore Digital Library