Observations of non-Rayleigh acoustic backscatter and spatial correlation

Autor:	John R. Preston, Chad M. Smith
Rok vydání:	2017
Předmět:	Spatial correlation Acoustics and Ultrasonics Arts and Humanities (miscellaneous) Backscatter Cardioid Matched filter Acoustics Clutter Envelope (radar) Marine mammals and sonar Geology Shape parameter
Zdroj:	The Journal of the Acoustical Society of America. 141:3488-3488
ISSN:	0001-4966
DOI:	10.1121/1.4987275
Popis:	Observations of non-Rayleigh acoustic backscatter in data taken during the 2015 Littoral Continuous Active Sonar (LCAS) experiment are discussed using K-distribution shape parameter and comparison with spatial correlation width estimates. Data were collected using the Five Octave Research Array (FORA) cardioid aperture in a towed, roughly monostatic configuration. Several tracks were repeatedly measured using differing signal bands and pulse lengths allowing the use of matched filter envelope and K-distribution statistics to characterize returns in several pulse parameter configurations. Correlation width estimates are compared with non-Rayleigh regions found using shape parameter. Early work uses shallow broadside angles and vessel travel to estimate statistics for large regions providing an efficient search for clutter events. [Work supported by Office of Naval Research.]
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7f1bca9ded7f76b710e2d0ee370396b0 https://doi.org/10.1121/1.4987275 Zobrazit plný text záznamu