Page 209 - Intro to Space Sciences Spacecraft Applications

Introduction to Space Sciences and Spacecrafi Applications
196
Table 8-12
Evolution of Satellite Systems
196OSnOs 197Od80s 1990s/2000s
SPACE Small Large Very large, Small, single use
SEGMENT Integrated Modular multiple-use
design Expendable Modular, expandable
Expendable Long life with Short life
maintenance and
modification
MISSION Navigation, Navigation, Many missions using Single missions
communication, communications, one platform (e.g.,
passive remote active remote space shuttle, space
sensing sensing station)
Single missions Integrated
missions

CONTROL Ground-based Ground- and Autonomous and
SEGMENT Low data rate space-based space-based
Frequent blind High data rate Onboard processing,
periods Selective ground evaluation,
Spotty tracking network and decision-making
ground stations space relay Continuous coverage
Nearly Excellent continuous
continuous tracking
coverage
Good tracking,
varying with orbit

designed with the capability for in-space repair or retrieval for refurbish-
ment and reuse. The future will see major space systems actually con-
structed and tested in space before deployment and operation.

REFERENCES/ADDITIONAL READING

Pisacane, V. and Moore, R., Fundamentals of Space Systems. New York:
Oxford University Press, 1994.
Wertz, J. and Larson, W., Space Mission Analysis and Design. Boston:
Kluwer Academic Publishers, 1991.
Griffin, M. and French, J., Space Vehicle Design. Washington, D.C.:
American Institute of Aeronautics and Astronautics, 1991.