AN INTERNATIONAL GEOSTATIONARY OVERLAY FOR GPS AND GLONASS

G. V. Kinal and J. P. Singh

Peer Reviewed

Abstract:	The concept of employing simple, nonautonomous satellite repeaters on geostationary hosts for civil radionavigation has been recommended by a number of authors. This paper reviews the history of the geostationary repeater concept, especially for integrity broadcast and for coverage augmentation. It indicates how a worldwide geostationary overlay is likely to be more economical than launching additional autonomous navigation satellites. Also presented are recently developed technical considerations for the geostationary overlay concept, including design parameters for the navigation package, signal and data format considerations for augmentation and integrity, and ground network concepts for generating and timing the uplink signals. Early results of a test program being conducted with transmission of GPS-like signals via an existing L-band mobile communications satellite are reported. These results appear to validate the geostationary repeater overlay concept.
Published in:	NAVIGATION: Journal of the Institute of Navigation, Volume 37, Number 1
Pages:	81 - 94
Cite this article:	Kinal, G. V., Singh, J. P., "AN INTERNATIONAL GEOSTATIONARY OVERLAY FOR GPS AND GLONASS", NAVIGATION: Journal of The Institute of Navigation, Vol. 37, No. 1, Spring 1990, pp. 81-94.
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