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Opt Lett. 2003 Jan 15;28(2):81-3.

Performance parameters for detection in low-flux coherent images.

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Physics and Image Processing Group/Fresnel Institute, Unité Mixte de Recherche Centre National de la Recherche Scientifique 6133, Domaine Universitaire de Saint-Jérôme, 13397 Marseille Cedex 20, France.


We analyze the optimization of low-flux coherent active imagery systems for target detection. We demonstrate that, unlike the Fisher ratio, the Bhattacharyya distance is an efficient figure of merit when one uses detection algorithms based on the generalized likelihood ratio test for realistic situations when the target and the background mean values are unknown. For example, we show that detection capabilities can be better if the pulse energy is divided into four shots, whereas using more than ten shots does not significantly improve the results.

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