DocumentCode :
1994794
Title :
Sensitivity analysis of high-resolution array processing algorithms
Author :
Friedlander, Benjamin
Author_Institution :
Signal Process. Technol. Ltd., Palo Alto, CA, USA
fYear :
1989
fDate :
6-8 Sep 1989
Firstpage :
121
Lastpage :
122
Abstract :
Summary form only given. The sensitivity of the maximum-likelihood and MUSIC (multiple signal classification) algorithms, which are used to estimate the directions of arrival of signals from multiple sources, has been quantified. A first-order sensitivity analysis of these algorithms was performed to determine the effect of modeling errors (i.e. system errors, which cause differences between the true and assumed array manifolds), assuming a perfectly known covariance matrix (the infinite-data case). The effect of phase and gain errors in the array elements or in the receivers and the effect of errors in the element locations were studied for two closely spaced sources. Both uncorrelated and correlated sources were considered. Formulas were developed for the error introduced into the direction-of-arrival (DOA) estimates produced by these algorithms, when the modeling errors are small, as a function of the source locations and other system parameters. These formulas have been validated by computer simulations
Keywords :
sensitivity analysis; signal processing; MUSIC algorithm; algorithms; array elements; array processing algorithms; computer simulations; correlated sources; covariance matrix; direction-of-arrival; gain errors; high resolution algorithms; maximum likelihood algorithm; modeling errors; receivers; sensitivity analysis; system errors; system parameters; uncorrelated sources; Array signal processing; Classification algorithms; Computer errors; Covariance matrix; Direction of arrival estimation; Maximum likelihood estimation; Multiple signal classification; Phased arrays; Position measurement; Sensitivity analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Multidimensional Signal Processing Workshop, 1989., Sixth
Conference_Location :
Pacific Grove, CA
Type :
conf
DOI :
10.1109/MDSP.1989.97069
Filename :
97069
Link To Document :
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