The PLATO Payload and Data Processing System Space Wire Network

2018 IEEE Workshop on Complexity in Engineering (COMPENG) Pub Date : 2018-08-29 DOI:10.1109/CompEng.2018.8536225

M. Focardi, R. Cosentino, S. Pezzuto, D. Biondi, G. Giusi, L. Serafini, C. D. V. Blanco, D. Vangelista, Matteo Rotundo, L. Fanucci, Daniele Davalle, P. D. Team

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引用次数: 1

Abstract

PLATO [1] has been selected and adopted by ESA as the third medium-class Mission (M3) of the Cosmic Vision Program, to be launched in 2026 with a Soyuz-Fregat rocket from the French Guiana. Its Payload (P/L) is based on a suite of 26 telescopes and cameras in order to discover and characterise, thanks to ultra-high accurate photometry and the transits method, new exoplanets down to the range of Earth analogues. Each camera is composed of 4 CCDs working in full-frame or frame-transfer mode. 24 cameras out of 26 host 4510 by 4510 pixels CCDs, operated in full-frame mode with a pixel depth of 16 bits and a cadence of 25 s. Given the huge data volume to be managed, the PLATO P/L relies on an efficient Data Processing System (DPS) whose Units perform images windowing, cropping and compression. Each camera and DPS Unit is connected to a fast SpaceWire (SpW) network running at 100 MHz and interfaced to the satellite On-Board Computer (OBC) by means of an Instrument Control Unit (ICU), performing data collection and compression.

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PLATO有效载荷和数据处理系统空间有线网络

PLATO[1]已被ESA选定并采纳为宇宙视觉计划(Cosmic Vision Program)的第三个中型任务(M3)，将于2026年由法属圭亚那的Soyuz-Fregat火箭发射。它的有效载荷(P/L)是基于一套26架望远镜和相机，为了发现和表征，由于超高精度的光度测定和凌日法，新的系外行星低至地球类似物的范围。每个相机由4个ccd组成，工作在全帧或帧传输模式。26台摄像机中的24台主机上有4510 × 4510像素的ccd，在全帧模式下运行，像素深度为16位，节奏为25秒。考虑到要管理的庞大数据量，PLATO P/L依赖于一个高效的数据处理系统(DPS)，其单元执行图像窗口，裁剪和压缩。每个摄像机和DPS单元都连接到运行在100 MHz的快速SpaceWire (SpW)网络，并通过仪器控制单元(ICU)与卫星车载计算机(OBC)接口，执行数据收集和压缩。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2018 IEEE Workshop on Complexity in Engineering (COMPENG)

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