Computer Science – Performance
Scientific paper
Oct 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990gdss.rept..659d&link_type=abstract
In ESA, Ground Data Systems for Spacecraft Control p 659-663 (SEE N91-22189 14-17)
Computer Science
Performance
Computer Systems Performance, Data Retrieval, Data Storage, Data Systems, Data Transmission, Scientific Satellites, X Ray Astronomy, Control Systems Design, Operations Research
Scientific paper
The Reformatted Raw Data (RRD) archive design of the SAX X-ray astronomy satellite is described. Its capabilities of fast, flexible storing and retrieving, and interpreting the nature of data, and the capability of copying the online RRD onto optical disk storage are described. The peculiarity of the SAX RRD arises from nonuniformity among data coming from several experiments. The RRD structure is organized such that it is capable of storing and retrieving high traffic data volume in almost real time. Five types of instruments are present on the SAX satellite and each one performs separate experiments in various operative modes and submodes. The transmitted scientific data have to be processed in quick look mode; thus, a high level performance design at the Operational Control Center (OCC) is required.
Coletta A.
Dalessandro F.
Negri Barbara
Trifoglio Massimo
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