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21 September 2012 The command and data processing unit of the EUCLID visible imager: impact of the data compression needs on the unit design
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Abstract
The Command and Data Processing Unit (CDPU) of the Euclid Visible Imager is one of the two warm electronics units of the instrument. It implements on one side the digital interface to the satellite, for telecommands acquisition and telemetry downloading, and on the other side the interface to the focal plane CCDs readout electronics, for science data acquisition and compression. The CDPU main functionalities include the instrument commanding, control and health monitoring. The baseline unit architecture is presented, reporting the results of the phase B1 study and of the trade-off activity carried out to check the performances of the SW implementation of two different lossless compression algorithms on the baseline target processor (LEON3-FT) and on a HW compressor.
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Anna Maria Di Giorgio, Paolo Bastia, Scige J. Liu, Giovanni Giusi, Roberto Scaramella, Mark Cropper, Richard Cole, Ady James, Jérôme Amiaux, and Yannick Mellier "The command and data processing unit of the EUCLID visible imager: impact of the data compression needs on the unit design", Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 844233 (21 September 2012); doi: 10.1117/12.926638; https://doi.org/10.1117/12.926638
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