24 August 2000 Local intensity tests for optimal detectability
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This paper develops a method to model the two parameter Constant False Alarm Rate (CFAR) detector as an intensity test. For optimality we show that the shape of the stencil should be matched to the radial intensity profile of the target. Using principal component analysis (PCA) we show experimentally that the first gamma kernel is a good approximation to the target profile, which explains the good results of the (gamma) -CFAR detector, and may lead to configurable stencils for better detectability.
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LiKang Yen, LiKang Yen, Sashidhar Bhikkaji, Sashidhar Bhikkaji, Jose C. Principe, Jose C. Principe, "Local intensity tests for optimal detectability", Proc. SPIE 4053, Algorithms for Synthetic Aperture Radar Imagery VII, (24 August 2000); doi: 10.1117/12.396341; https://doi.org/10.1117/12.396341

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