Title :
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
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;
Conference_Titel :
Radar Conference, 1991., Proceedings of the 1991 IEEE National
Conference_Location :
Los Angeles, CA
Print_ISBN :
0-87942-629-2
DOI :
10.1109/NRC.1991.114742
