Power Control at GEO Uplink Subsystem (GUS) and Interference Detection for Space-Based Augmentation System (SBAS)

M. S. Grewal, W. Brown, P. Hsu and R. Lucy

Abstract:	In some space-based augmentation systems (SBAS), the uplink signal carrier frequency is K-band. The uplink Kband frequency is converted into L1 downlink and Kband downlink signals. L1 signal power is not affected by rain. However, rain causes significant attenuation to Kband signals. The objective of uplink power control is to compensate for the uplink power loss due to rain attenuation and uplink interference without maximizing uplink EIRP (Effective Isotropic Radiated Power). This paper shows the concept of uplink power control and interference detection and includes both simulation and laboratory test results.
Published in:	Proceedings of the IAIN World Congress and the 56th Annual Meeting of The Institute of Navigation (2000) June 26 - 28, 2000 The Catamaran Resort Hotel San Diego, CA
Pages:	285 - 292
Cite this article:	Grewal, M. S., Brown, W., Hsu, P., Lucy, R., "Power Control at GEO Uplink Subsystem (GUS) and Interference Detection for Space-Based Augmentation System (SBAS)," Proceedings of the IAIN World Congress and the 56th Annual Meeting of The Institute of Navigation (2000), San Diego, CA, June 2000, pp. 285-292.
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