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• W2324539079 abstract "Target detection in nonhomogeneous sea clutter environments is a complex and challenging task due to the capture effect from interfering outliers and the clutter edge effect from background intensity transitions. For synthetic aperture radar (SAR) measurements, those issues are commonly caused by multiple targets and meteorological and oceanographic phenomena, respectively. This paper proposes a segmentation-based constant false-alarm rate (CFAR) detection algorithm using truncated statistics (TS) for multilooked intensity (MLI) SAR imagery, which simultaneously addresses both issues. From our previous work, TS is a useful tool when the region of interest (ROI) is contaminated by multiple nonclutter pixels. Within each ROI confined by the reference window, the proposed scheme implements an automatic image segmentation algorithm, which performs a finite mixture model estimation with a modified expectation-maximization algorithm. Data truncation is applied here to exclude all possible statistically interfering classes, and sample modeling is based upon the truncated two-parameter gamma model. Next, CFAR detection is conducted pixel by pixel, utilizing the statistical information obtained from the segmentation process within the local reference window. The segmentation-based CFAR detection scheme is examined with real Radarsat-2 MLI SAR imagery. Compared with the conventional CFAR detection approaches, our proposal provides improved background clutter modeling and robust detection performance in nonhomogeneous clutter environments." @default.
• W2324539079 created "2016-06-24" @default.
• W2324539079 creator A5022582985 @default.
• W2324539079 creator A5034411171 @default.
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• W2324539079 date "2016-05-01" @default.
• W2324539079 modified "2023-09-25" @default.
• W2324539079 title "A Segmentation-Based CFAR Detection Algorithm Using Truncated Statistics" @default.
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• W2324539079 doi "https://doi.org/10.1109/tgrs.2015.2506822" @default.
• W2324539079 hasPublicationYear "2016" @default.
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