A robust automatic censored CFAR detector for nonhomogeneous environments

Author

Himonas, Stelios D.

Author_Institution

Dept. of Electr. Eng., New York Inst. of Technol., NY, USA

fYear

1991

fDate

12-13 Mar 1991

Firstpage

117

Lastpage

121

Abstract

A robust constant false alarm rate (CFAR) detector is proposed in which two tentative estimates of the noise level in the test cell are obtained by independently processing the outputs of the leading and the lagging range cells. These estimates are derived by employing a cell-by-cell criterion for accepting or rejecting reference samples. The final estimate of the noise level in the cell under test is set to be the maximum of the two tentative estimates. This automatic censored greatest-of (ACGO) CFAR detector exhibits robust false alarm control properties which are comparable to those of the GO-CFAR detector when the test cell and group of reference cells are in the clutter. It is also capable of censoring efficiently any unwanted interfering target returns that might appear in either the clutter or the clear region

Keywords

radar clutter; signal detection; automatic censored CFAR detector; clutter; constant false alarm rate; false alarm control properties; interfering target returns; noise level; nonhomogeneous environments; range cells; reference cells; reference samples; test cell; Clouds; Degradation; Detectors; Maximum likelihood detection; Maximum likelihood estimation; Noise level; Noise robustness; Random variables; Testing; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar Conference, 1991., Proceedings of the 1991 IEEE National

Conference_Location

Los Angeles, CA

Print_ISBN

0-87942-629-2

Type

conf

DOI

10.1109/NRC.1991.114742

Filename

114742