DocumentCode :
1049504
Title :
On radar detection and direction finding using sparse arrays
Author :
Athley, F. ; Engdahl, C. ; Sunnergren, P.
Author_Institution :
Ericsson AB, Goteborg
Volume :
43
Issue :
4
fYear :
2007
fDate :
10/1/2007 12:00:00 AM
Firstpage :
1319
Lastpage :
1333
Abstract :
The potential performance of radar systems employing sparse arrays is investigated. Different sparse array geometries are evaluated with respect to detection and estimation performance. We present appropriate tools for analytical computation of the detection and estimation performance of the likelihood ratio test (LRT) and the maximum likelihood estimator (MLE), respectively. Particular attention is paid to the effect of ambiguity errors on system performance. The results show that sparse arrays have several advantages over nonsparse arrays, but that ambiguities deteriorate performance when sidelobe interference is present. Some ways to mitigate the ambiguity effects on system performance are briefly discussed.
Keywords :
arrays; maximum likelihood estimation; radar detection; radio direction-finding; direction finding; likelihood ratio test; maximum likelihood estimator; radar detection; radar systems; sidelobe interference; sparse arrays; Geometry; Interference; Light rail systems; Maximum likelihood detection; Maximum likelihood estimation; Microwave antenna arrays; Performance analysis; Radar detection; System performance; Testing;
fLanguage :
English
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9251
Type :
jour
DOI :
10.1109/TAES.2007.4441742
Filename :
4441742
Link To Document :
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