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Optimality of the cell averaging CFAR detector

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2 Author(s)
Gandhi, P.P. ; Dept. of Electr. & Comput. Eng., Villanova Univ., PA, USA ; Kassam, S.A.

The cell averaging constant false alarm rate detector has been assumed to be optimal for detecting Swerling I targets embedded in exponential clutter and noise of unknown power. This is because the detector uses a minimum variance unbiased estimate (which is also a maximum likelihood estimate) of the unknown clutter-plus-noise power to set the threshold. The authors prove, using a result concerning least favorable distributions in composite hypotheses testing, that the cell averaging detector is indeed optimal in that it is a uniformly most powerful detector

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Information Theory, IEEE Transactions on  (Volume:40 ,  Issue: 4 )