Improved navigation system for USBL users

Author

Jourdan, David ; Brown, Bruce

Author_Institution

Meridian Sci. Inc., USA

Volume

1

fYear

1997

fDate

6-9 Oct 1997

Firstpage

727

Abstract

It is typical for underwater contractors to use an ultra-short baseline (USBL) acoustic navigation system referenced to a precise surface navigation system such as DGPS in order to position a remote vehicle or towbody in shallow to moderate depths. Due, in good part, to the influence of the physical environment, this position data is often very noisy with experienced accuracy being ±50 to 75 meters. Meridian Sciences, a U.S. Navy contractor specializing in navigation refinement, is currently developing a technique which will reduce errors of this magnitude to an error of ±15 meters. As this technique models the inherent errors in all of the system sensors, this improved accuracy will depend on the type and number of sensors used

Keywords

marine systems; navigation; position measurement; sonar; Meridian Sciences; USBL users; accuracy; moderate depths; navigation system; remote vehicle; shallow depths; surface navigation; towbody; ultra-short baseline acoustic navigation system; Acoustic noise; Dead reckoning; Frequency; Global Positioning System; Marine vehicles; Position measurement; Real time systems; Sensor systems; Sonar navigation; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS '97. MTS/IEEE Conference Proceedings

Conference_Location

Halifax, NS

Print_ISBN

0-7803-4108-2

Type

conf

DOI

10.1109/OCEANS.1997.634456

Filename

634456