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Proceedings Paper

GATES: a small, agile imaging satellite prototype for GOES-R
Author(s): Dennis Chesters; Del T. Jenstrom
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Paper Abstract

By using current technology, it appears possible to build and launch a prototype for an advanced geosynchronous imager on a small within a few years. This could be done independently of upgrading the other GOES mission functions of atmospheric sounding, communications, and space- and solar-monitoring. At NASA-GSFC, we are engaged in a feasibility study for a Geosynchronous Advanced Technology Environmental System (GATES). GATES is envisioned as a high performance imager on a small dedicated satellite with a complete ground system. GATES could fly in the era of the Earth Observing System and serve as a prototype for NOAA's next generation of operational satellites. In addition to carrying all the channels identified for NOAA's GOES-R Imager, GATES is being designed to carry all the broadband channels specified for NASA's Moderate-resolution Imaging Spectro-radiometer instrument on the EOS platforms. This channel complement gives GATES the capability to fill in the space-time gaps in cloud observations from polar-orbiting satellites and to serve as a cross-reference between polar radiometers. Multispectral rapid-imaging requirements are met by using several recently developed technologies: large detector arrays with active cooling, star-tracking and gyroscopic attitude-determination, a small and rigid spacecraft, a heat-resistent telescope, a phased-array Ka- band downlink, realtime digital image rectification, and Internet data distribution on the ground. The GATES design is so small and agile that it could use the momentum wheels to scan the entire spacecraft back-and-forth across the Earth.

Paper Details

Date Published: 18 October 1996
PDF: 10 pages
Proc. SPIE 2812, GOES-8 and Beyond, (18 October 1996); doi: 10.1117/12.254089
Show Author Affiliations
Dennis Chesters, NASA Goddard Space Flight Ctr. (United States)
Del T. Jenstrom, NASA Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 2812:
GOES-8 and Beyond
Edward R. Washwell, Editor(s)

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