Signal processing strategies for a bathymetric sidescan sonar

Author

Denbigh, Philip N.

Author_Institution

Sch. of Eng., Sussex Univ., Brighton, UK

Volume

19

Issue

3

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

382

Lastpage

390

Abstract

A dominant source of errors in swath bathymetry is acoustic interference. In 1989 the author published an analysis of these errors and predicted depth accuracies for a system which reduced their effect by averaging. This present paper shows how a considerable improvement in performance may be obtained by a variety of signal processing strategies that include the use of several widely spaced receivers and the elimination of the most unsatisfactory measurements before averaging. Simulations show how impressive sea bed profiles can be produced with a single ping, even at low signal-to-interference ratios

Keywords

acoustic imaging; acoustic signal processing; bathymetry; geophysical techniques; oceanographic techniques; seafloor phenomena; sonar; acoustic interference; acoustic measurement technique; averaging; bathymetry; ocean; sea bed profile; sea depth; seafloor topography; sidescan sonar; sonar; sonar signal processing; swath bathymetry; widely spaced receivers; Acoustic measurements; Acoustic signal processing; Backscatter; Frequency; Interference; Sea measurements; Sea surface; Signal processing; Sonar measurements; Time measurement;

fLanguage

English

Journal_Title

Oceanic Engineering, IEEE Journal of

Publisher

ieee

ISSN

0364-9059

Type

jour

DOI

10.1109/48.312914

Filename

312914