DocumentCode
2854083
Title
Sonar bottom mapping using fourth-order cumulants
Author
Jeffers, Russell
Author_Institution
Digital Syst. Resources, Fairfax, VA, USA
fYear
2003
fDate
28 Sept.-1 Oct. 2003
Firstpage
450
Lastpage
453
Abstract
The problem of sonar bottom mapping is addressed. Recent work has shown that high frequency seafloor backscatter can be characterized statistically by non-Gaussian, heavy tailed distributions. The statistical characterization can be exploited for improved bottom mapping. Known array processing methods are employed but with fourth-order cumulant functions rather than second-order covariance. The fourth-order statistics allow improved rejection of Gaussian interference for greater array gain in this application.
Keywords
Gaussian distribution; direction-of-arrival estimation; higher order statistics; hydrological techniques; interference (signal); sonar signal processing; Gaussian interference; array processing methods; direction-of-arrival estimation; fourth-order cumulants; high frequency seafloor backscatter; sonar bottom mapping; Array signal processing; Backscatter; Delay estimation; Direction of arrival estimation; Frequency; Random processes; Scattering; Sensor arrays; Sonar applications; Statistical distributions;
fLanguage
English
Publisher
ieee
Conference_Titel
Statistical Signal Processing, 2003 IEEE Workshop on
Print_ISBN
0-7803-7997-7
Type
conf
DOI
10.1109/SSP.2003.1289444
Filename
1289444
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