Accession Number:

ADA232724

Title:

An Investigation of CFAR Techniques for Airborne Radars

Descriptive Note:

Technical rept.

Corporate Author:

DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s):

Report Date:

1990-12-01

Pagination or Media Count:

58.0

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 of 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. Author

Subject Categories:

  • Cybernetics
  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE