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Space-based augmentation for global navigation satellite systems

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1 Author(s)
Grewal, M.S. ; Electr. Eng. Dept., California State Univ., Fullerton, CA, USA

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.

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Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on  (Volume:59 ,  Issue: 3 )