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- W1974940849 abstract "Sonar clutter is one of the primary limitations to active ASW. This work focuses on statistical analysis of clutterlike echoes from some bistatic measurements. Non-Gaussian characterizations of bistatic echoes from a shipwreck are presented. The received data are taken from the five octave research array (FORA) that has been used to collect extensive monostatic and bistatic data in two recent sea trials on the Malta Plateau off Sicily called Clutter 07 and BASE 07. This work uses data from the above mentioned sea trials to characterize non-Gaussian behavior of bistatic echoes from a shipwreck using pulsed sources in the 800–3500 Hz band. The page test is used to isolate the shipwreck echoes before processing. K-distributions with their shape and scale parameters are used to describe non-Gaussian behavior together with the models of Abraham and Lyons to infer physical descriptors from the echoes. The ability to georeference key statistical measures of clutter allows CFAR processors to adaptively set thresholds and reduce false alarms. Examples are shown to demonstrate this. Also included are presentations of the shape parameter versus bistatic aspect angle. [Work supported by ONR Code No. 321US]." @default.
- W1974940849 created "2016-06-24" @default.
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- W1974940849 date "2011-04-01" @default.
- W1974940849 modified "2023-09-25" @default.
- W1974940849 title "Characterization of non‐Gaussian, bistatic, echoes from a shipwreck." @default.
- W1974940849 doi "https://doi.org/10.1121/1.3589021" @default.
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