Computer Science – Performance
Scientific paper
Jul 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4013..894s&link_type=abstract
Proc. SPIE Vol. 4013, p. 894-907, UV, Optical, and IR Space Telescopes and Instruments, James B. Breckinridge; Peter Jakobsen; E
Computer Science
Performance
Scientific paper
In the frame of an ESA program, as a potential contribute to NASA-ESA NGST project, this study focuses on the On Board Data Management System, starting from the requirements defined by a European Science Team. The expected amount of data collected in a single day of observation will be about 1600 GBytes, while the downlink capacity is at present in the range of 5 to 40 GBytes/day. Given these figures, on- board data reduction will be mandatory. It should include detector and signal conditioning, non-linearity correction, cosmic rays detection and rejection, source intensity (photon flux) estimation and data compression. The paper emphasizes different data reduction algorithms and compares their performances with respect to cosmic ray detection efficiency and source intensity estimation error.
Bonati Arnaldo
Bruno Immacolata
Caraveo Patricia A.
Cornelisse Koos W.
Denskat Ulrich
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