Title :
Effects of nonzero bandwidth on direction of arrival estimators in array signal processing
Author :
Sorelius, Joakim ; Moses, Randolph L. ; Söderström, Torsten
Author_Institution :
Dept. of Technol., Uppsala Univ., Sweden
Abstract :
We consider the impact of bandwidth on narrowband direction-of-arrival (DOA) estimation using an array of sensors. We derive expressions for the DOA bias for three array processing algorithms: MUSIC, ESPRIT, and weighted subspace fitting. The bias expressions are found by a perturbation analysis of these algorithms for small relative bandwidths of the sources. We compare the perturbation-based bias predictions to actual bias for some cases of interest
Keywords :
array signal processing; direction-of-arrival estimation; DOA bias; DOA estimation; ESPRIT; MUSIC; array processing algorithms; array signal processing; bias expressions; bias predictions; direction of arrival estimators; nonzero bandwidth; perturbation analysis; sensors array; small relative bandwidths; sources; weighted subspace fitting; Analysis of variance; Array signal processing; Autocorrelation; Bandwidth; Covariance matrix; Direction of arrival estimation; Frequency; Sensor arrays; Signal analysis; Uncertainty;
Conference_Titel :
Digital Signal Processing Workshop Proceedings, 1996., IEEE
Conference_Location :
Loen
Print_ISBN :
0-7803-3629-1
DOI :
10.1109/DSPWS.1996.555540
