DocumentCode :
906119
Title :
Analysis of high-resolution land clutter
Author :
Davidson, G. ; Griffiths, H.D. ; Ablett, S.
Author_Institution :
Univ. Coll. London, UK
Volume :
151
Issue :
1
fYear :
2004
Firstpage :
86
Lastpage :
91
Abstract :
Results are presented of an analysis of land clutter from the fixed site high-resolution BYSON radar at Malvern. Digital terrain elevation data are used to determine the imaged ground regions and the normalised-log estimator U is measured to investigate the stability of the long-tailed clutter distribution. Operational target detectors must maintain a constant false alarm rate over the entire scene, but small areas of non-Gaussian backscatter cause the majority of false alarms. To overcome this, a variable CFAR detector is tested and compared to standard CA and CAGO processors. The performance of the empirically determined variable CFAR is superior, but results suggest that there is no simple statistical model for land clutter of this kind as the false alarms within a particular scene are strongly correlated with the environment.
Keywords :
alarm systems; backscatter; radar clutter; radar detection; radar resolution; terrain mapping; CAGO processor; Malvern; constant false alarm rate; digital terrain elevation data; fixed site high-resolution BYSON radar; high-resolution land clutter analysis; imaged ground region determination; long-tailed clutter distribution stability; nonGaussian backscatter; normalised-log estimator measurement; operational target detector; standard cell averaging; statistical model; variable CFAR detector performance;
fLanguage :
English
Journal_Title :
Vision, Image and Signal Processing, IEE Proceedings -
Publisher :
iet
ISSN :
1350-245X
Type :
jour
DOI :
10.1049/ip-vis:20040303
Filename :
1269462
Link To Document :
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