EPS GRAS mission for operational GPS Meteorology

Juha Pekka Luntama

Abstract:	EPS is the European component of a joint European/US polar satellite system, the Initial Joint Polar System (IJPS) to support operational meteorology and climate monitoring. The EPS space segment comprises three Metop satellites (Metop-1 and –2 belong to the IJPS) that will be flown successively in the morning orbit (AM) (The NOAA spacecrafts cover the afternoon orbit) from the year 2005 covering a time period of 14 years. GRAS (GPS Receiver for Atmospheric Sounding) is one of the eight scientific payload instruments onboard the Metop satellites. This paper presents a description of the objectives, and design of the EPS (EUMETSAT Polar System) GRAS mission. The elements of the GRAS data processing system, data products and the user access to the products are explained. Estimates of the performance of the instrument and the quality of the data products are presented based on the information of the instrument and analysis of the data processing system.
Published in:	Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001) September 11 - 14, 2001 Salt Palace Convention Center Salt Lake City, UT
Pages:	1137 - 1148
Cite this article:	Luntama, Juha Pekka, "EPS GRAS mission for operational GPS Meteorology," Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001), Salt Lake City, UT, September 2001, pp. 1137-1148.
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