空间太阳望远镜数据总线解决方案  

Solution of Data Bus for the Space Solar Telescope

作　　者：张蕾[1] 孙才红[1] 

机构地区：[1]中国科学院国家天文台,北京100012

出　　处：《天文研究与技术》2009年第2期142-146,共5页Astronomical Research & Technology

摘　　要：空间太阳望远镜的星上数据处理系统需要对高速、海量的科学数据流进行实时处理,选择合适的空间数据总线解决方案至关重要。SpaceWire是由欧空局提出的一种新型高速串行数据总线标准,已经应用并计划用于ESA和NASA等多个任务中。在空间太阳望远镜项目中,SpaceWire将负责在五个载荷仪器和科学处理单元(SDPU)之间组建网络,完成高速数据传输的任务。通过对SpaceWire协议进行分析,设计了基于SpaceWire的双冗余总线的容错方案。建立了基于DSP+FPGA结构的通信测试平台,并分别给出软硬件设计及测试结果。The on-board data-processing system speed massive science data streams in real time. It is of the Space Solar Telescope is required to process highthus crucial to choose a right solution of space data bus.The SpaceWire is a new high-speed serial data-bus standard proposed by the European Space Agency, and it has been used and is planned to be used in many missions of ESA and NASA. In the Space Solar Telescope project, the SpaceWire will be used to establish transmission network between the five instruments and Scientific Data Processing Unit. Through analyzing the SpaceWire standard, we design a fault-tolerant scheme of the dual redundant bus based on the SpaceWire. We subsequently build a test platform based on DSP ＋ FPGA, and show the software/hardware design as well as the test results.

关 键 词：SPACEWIRE SST DSP FPGA 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]