WAAS, EGNOS, MSAS, and SNAS for telecom sync applications

Author

Fruehauf, H.

Author_Institution

FEI-Zyfer Inc., Anaheim, CA

fYear

2004

fDate

5-7 April 2004

Firstpage

142

Lastpage

142

Abstract

The WAAS, EGNOS, MSAS, and SNAS GPS-augmentation systems bridge the gap between the military applications of GPS and the needs of the civil aviation navigation community. These USA, Europe, and Asian systems consist of a network of differential GPS ground stations, using principally the Inmarsat-3 geo-synchronous satellite constellation as the means of relaying the differential corrections to the users. In the process of providing precise navigation signals, GPS time is maintained through the Inmarsat-3 uplink/downlink networks. It is this functionality that provides for robust time retrieval for the time and frequency synchronization needs of the telecommunications community.

Keywords

Global Positioning System; artificial satellites; Asian systems; EGNOS; Europe systems; GPS-augmentation systems; Inmarsat-3 geo-synchronous satellite constellation; Inmarsat-3 uplink/downlink networks; MSAS; SNAS; USA systems; WAAS; civil aviation navigation community; differential GPS ground stations; frequency synchronization; military applications; precise navigation signals; robust time retrieval; telecom sync applications; telecommunications community; time synchronization;

fLanguage

English

Publisher

iet

Conference_Titel

Frequency and Time Forum, 2004. EFTF 2004. 18th European

Conference_Location

Guildford

ISSN

0537-9989

Print_ISBN

0-86341-384-6

Type

conf

Filename

5074926