Time Synchronization Strategy Between On-Board Computer and FIMS on STSAT-1

Details Time Synchronization Strategy Between On-Board Computer and FIMS on STSAT-1 Time Synchronization Strategy Between On-Board Computer and FIMS on STSAT-1

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jass...21..109k&link_type=abstract

Journal of Astronomy and Space Sciences. Vol. 21, no. 2, p.109-120

Astronomy and Astrophysics

Astronomy

Stsat-1, Fims, On-Board Computer, Time Synchronization

Scientific paper

STSAT-1 was launched on sep. 2003 with the main payload of Far Ultra-violet Imaging Spectrograph(FIMS). The mission of FIMS is to observe universe and aurora. In this paper, we suggest a simple and reliable strategy adopted in STSAT-1 to synchronize time between On-board Computer(OBC) and FIMS. For the characteristics of STSAT-1, this strategy is devised to maintain reliability of satellite system and to reduce implementation cost by using minimized electronic circuits. We suggested two methods with different synchronization resolutions to cope with unexpected faults in space. The backup method with low resolution can be activated when the main has some problems.

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