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28 July 2000 Onboard science data processing for NGST: algorithms and architectures
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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.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Luca Scandelli, Arnaldo Bonati, Immacolata Bruno, Patricia A. Caraveo, Koos W. Cornelisse, Ulrich Denskat, and Massimiliano Pecora "Onboard science data processing for NGST: algorithms and architectures", Proc. SPIE 4013, UV, Optical, and IR Space Telescopes and Instruments, (28 July 2000);

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