Oceanographic DataLink

Author

Gamache, Kenneth A. ; Wetherby, Kathleen E.

Author_Institution

ViaSat, Inc., Acton, MA, USA

Volume

26

Issue

4

fYear

2001

fDate

10/1/2001 12:00:00 AM

Firstpage

622

Lastpage

632

Abstract

This paper describes the Oceanographic DataLink (ODL) system, a global, multi-user telemetry system designed for oceanographic applications. This system uses a combination of spread spectrum, advanced modulation and coding techniques to support global control and data acquisition using existing C-band satellites. User equipment is designed to be self-powered and small, with antennas that can be as small as a quarter. This paper discusses the capabilities of this system in the context of other communication systems presently employed or planned for oceanographic applications. It also discusses the system issues faced in its development and the methods and technologies employed to overcome these challenges. It describes the system architecture and ongoing improvements to the architecture. It also details multiple successful demonstrations of the technology and the near-term plans for demonstrations of the technology with the discussed improvements

Keywords

data communication; digital communication; frequency shift keying; marine telemetry; multi-access systems; oceanographic techniques; satellite telemetry; spread spectrum communication; turbo codes; C-band satellites; INTELSAT satellites; M-ary FSK modulation; Oceanographic DataLink system; RACOM III buoy; advanced coding techniques; advanced modulation techniques; data communication applications; global beam transponders; global control; global data acquisition; global multi-user telemetry system; hub-and-spoke architecture; multi-access datalink; oceanographic applications; remote terminals; satellite communications; self-powered user equipment; spread spectrum techniques; turbo codes; turbo decoder; two-way link; user terminal architecture; worldwide converge; Artificial satellites; Communication system control; Control systems; Costs; Marine technology; Modulation coding; Remote monitoring; Spread spectrum communication; Telemetry; Transponders;

fLanguage

English

Journal_Title

Oceanic Engineering, IEEE Journal of

Publisher

ieee

ISSN

0364-9059

Type

jour

DOI

10.1109/48.972102

Filename

972102