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Proceedings Paper

System design of a compact integrated command and telemetry subsystem
Author(s): Frank Czopek; Don K. LeFevre
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Paper Abstract

Every EOS satellite needs to down-link imagery (telemetry) and receive daily mission planning updates (commands). As image resolution has increased, down-link data rates and the required hardware to support the link functions have increased. A system design of a compact Integrated Command and Telemetry Subsystem is presented that deviates from this growth trend. The proposed system design is based on a modular packaging concept that offers high performance in a small (SEM-C) package. The design allows the modulation scheme, data compression approach, encryption, and image sensor interface to be tailored or changed by replacement modules. The design also features extensive use of built in test that helps to rapidly isolate anomalous operation both in test and on orbit. A discussion of how the method of modulation and data compression effects the efficiency of the link is presented.

Paper Details

Date Published: 16 September 1993
PDF: 4 pages
Proc. SPIE 1940, Small Satellite Technology and Applications III, (16 September 1993); doi: 10.1117/12.156643
Show Author Affiliations
Frank Czopek, Consultant (United States)
Don K. LeFevre, Cynetics Corp. (United States)

Published in SPIE Proceedings Vol. 1940:
Small Satellite Technology and Applications III
Brian J. Horais, Editor(s)

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