DocumentCode
1091447
Title
Narrowband line-array beamforming: practically achievable resolution limit of unbiased estimators
Author
Swingler, David N.
Author_Institution
Div. of Eng., St. Mary´´s Univ., Halifax, NS, Canada
Volume
19
Issue
2
fYear
1994
fDate
4/1/1994 12:00:00 AM
Firstpage
225
Lastpage
226
Abstract
Based on an approximation to the Cramer-Rao lower bound, it is demonstrated that meaningful resolution with an unbiased narrowband estimator requires a source separation of at least about 1/10 of a Rayleigh beamwidth, even under ideal circumstances, with 1/4 beamwidth being a more practically achievable figure
Keywords
array signal processing; parameter estimation; signal detection; Cramer-Rao lower bound; Rayleigh beamwidth; narrowband line-array beamforming; resolution limit; source separation; unbiased narrowband estimator; Array signal processing; Frequency estimation; Gaussian noise; Narrowband; Phased arrays; Sensor arrays; Signal resolution; Signal to noise ratio; Source separation; Spatial resolution;
fLanguage
English
Journal_Title
Oceanic Engineering, IEEE Journal of
Publisher
ieee
ISSN
0364-9059
Type
jour
DOI
10.1109/48.286645
Filename
286645
Link To Document