DocumentCode
813622
Title
Improved angular resolution for spatial smoothing techniques
Author
Li, Jian
Author_Institution
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Volume
40
Issue
12
fYear
1992
fDate
12/1/1992 12:00:00 AM
Firstpage
3078
Lastpage
3081
Abstract
Spatial smoothing techniques are used to estimate the directions of coherent arrivals. The performance of these techniques deteriorates rapidly as the coherent arrivals become closely spaced. The author examines the resolution performance of the existing forward-only and forward/backward spatial smoothing techniques. It is shown that the resolution for coherent signals can be improved by squaring array covariance matrices before forming smoothed array covariance matrices
Keywords
array signal processing; DOA estimation; angular resolution; array covariance matrices; array processing; coherent arrivals; coherent signals; direction-of-arrival estimation; forward-only technique; forward/backward technique; spatial smoothing techniques; Apertures; Approximation methods; Covariance matrix; Degradation; Direction of arrival estimation; Narrowband; Sensor arrays; Signal resolution; Smoothing methods; Spatial resolution;
fLanguage
English
Journal_Title
Signal Processing, IEEE Transactions on
Publisher
ieee
ISSN
1053-587X
Type
jour
DOI
10.1109/78.175754
Filename
175754
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