AN INVESTIGATION OF CFAR TECHNIQUES FOR AIRBORNE RADARS

Authors
  1. Vrckovnik, G.
  2. Faubert, D.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
In this report, techniques for performing constant false alarm rate (CFAR) processing, with airborne pulse-Doppler radars are described. Cell-averaging, greatest-of, and smallest-of CFAR processors are implemented on interference environments of thermal noise, and thermal noise plus clutter. For the particular radar conditions considered, a 60 dB clutter peak appears across all the range gates. While these three processors were successful in the thermal noise environment, they suffered large CFAR losses in the presence of the clutter peak. The smallest-of CFAR algorithm performed much worse than the other two, due to its tendency to underestimate the interference powers. Although enlarging the reference window improves the performance of all the processors, it is clear that for the complicated clutter situation examined, more sophisticated CFAR techniques are required.
Report Number
DREO-1056 — Technical Report
Date of publication
15 Dec 1990
Number of Pages
58
DSTKIM No
91-01032
CANDIS No
68247
Format(s):
Hardcopy;Originator's fiche received by DSIS

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