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Proceedings Paper

Design considerations for EOS direct broadcast
Author(s): Charles H. Vermillion; Paul H. Chan
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Paper Abstract

The objectives of this paper are to investigate the critical issues associated with EOS direct broadcast, and recommend design approaches for the EOS direct broadcast transmission and ground receiving. Even though the distribution of EOS data is centered around E0sDIS, there will still be strong needs for direct broadcast for the following reasons: TDRSS backup in case of system unavailability, provision of data for real-time or near real-time applications in regions around the world, transmission of data to remote sites to support field experiments and/or operational activities, development of the next generation direct broadcast service Some of the critical design issues associated with EOS direct broadcast are: 1) the choice of data subsets for direct broadcast, 2) the mode of transmission, 3) impacts on power, mass and cost, 4) the design of ground stations, and 5) the feasibility of on-board processing for direct broadcast. We envision two categories of direct readout stations. United States and nations such as Australia, Canada and China, which have or will have LANDSAT class ground stations, belong to the first category. These stations can support a data-rate of up to 100 Megabit per second (14bps). The second category includes smaller nations, like Indonesia, Bangladesh, Pakistan, and some African nations, which have or will have TIROS HPRT class ground stations. With some upgrades (mainly in the antenna and tape-recorder), these stations can receive a data—rate of up to 10 14bps.

Paper Details

Date Published: 1 September 1991
PDF: 5 pages
Proc. SPIE 1492, Earth and Atmospheric Remote Sensing, (1 September 1991); doi: 10.1117/12.45850
Show Author Affiliations
Charles H. Vermillion, NASA/Goddard Space Flight Ctr. (United States)
Paul H. Chan, Science Systems and Applications, Inc. (United States)

Published in SPIE Proceedings Vol. 1492:
Earth and Atmospheric Remote Sensing
Robert J. Curran; James Alan Smith; Ken Watson, Editor(s)

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