The PLATO ICU data compression chain: SW architecture and preliminary performance test results

Andrea Russi; Giovanni Giusi; Anna Maria Di Giorgio; Dominik Loidolt; Harald Ottacher; Simone Chiarucci; Scige J. Liu; Maria Farina; Fabrizio De Angelis; Mauro Focardi; Rosario Cosentino; Roland Ottensamer

doi:10.1117/12.3020165

23 August 2024 The PLATO ICU data compression chain: SW architecture and preliminary performance test results

Andrea Russi, Giovanni Giusi, Anna Maria Di Giorgio, Dominik Loidolt, Harald Ottacher, Simone Chiarucci, Scige J. Liu, Maria Farina, Fabrizio De Angelis, Mauro Focardi, Rosario Cosentino, Roland Ottensamer

Author Affiliations +

Proceedings Volume 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 1309248 (2024) https://doi.org/10.1117/12.3020165
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

PLAnetary Transits and Oscillations of stars (PLATO) is a medium-class mission selected by ESA in the framework of the Cosmic Vision programme. The PLATO Instrument Control Unit (ICU) is responsible for the management of the scientific payload, the communication with the satellite on board computer, the acquisition of housekeeping and scientific data from the 26 PLATO cameras and their processing before the downloading to the satellite mass memory unit. The data produced by the cameras cannot be transmitted directly to ground as soon as they are acquired but an onboard pre-processing and compression is needed. While the pre-processing stage is in charge of the camera's Data Processing Units (DPUs), the compression is executed on board ICU. Due to the highly demanding science requirements, the compression must be rigorously lossless. In this paper we will review the overall ICU onboard data processing chain, from the DPUs to the satellite mass memory, presenting the compression strategies implemented in the ICU application software architecture, and the results of the performance test run on the ICU Engineering Model.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Andrea Russi, Giovanni Giusi, Anna Maria Di Giorgio, Dominik Loidolt, Harald Ottacher, Simone Chiarucci, Scige J. Liu, Maria Farina, Fabrizio De Angelis, Mauro Focardi, Rosario Cosentino, and Roland Ottensamer "The PLATO ICU data compression chain: SW architecture and preliminary performance test results", Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 1309248 (23 August 2024); https://doi.org/10.1117/12.3020165

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