Space-based augmentation for global navigation satellite systems

Author

Grewal, Mohinder S.

Author_Institution

Electr. Eng. Dept., California State Univ., Fullerton, CA, USA

Volume

59

Issue

3

fYear

2012

fDate

3/1/2012 12:00:00 AM

Firstpage

497

Lastpage

503

Abstract

This paper describes space-based augmentation for global navigation satellite systems (GNSS). Space-based augmentations increase the accuracy and integrity of the GNSS, thereby enhancing users´ safety. The corrections for ephemeris, ionospheric delay, and clocks are calculated from reference station measurements of GNSS data in wide-area master stations and broadcast via geostationary earth orbit (GEO) satellites. This paper discusses the clock models, satellite orbit determination, ionospheric delay estimation, multipath mitigation, and GEO uplink subsystem (GUS) as used in the Wide Area Augmentation System developed by the FAA.

Keywords

Global Positioning System; broadcasting; delay estimation; GEO satellites; GEO uplink subsystem; GNSS data; GUS; broadcast; clock models; clocks; ephemeris; geostationary earth orbit satellites; global navigation satellite systems; ionospheric delay estimation; multipath mitigation; reference station measurements; satellite orbit determination; space-based augmentations; wide area augmentation system; wide-area master stations; Clocks; Delay; Frequency control; Kalman filters; Receivers; Satellite broadcasting; Satellites;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.2012.2220

Filename

6174196