小卫星星上计算机系统可靠性研究

由于重量轻、体积小、功耗低、功能强的小卫星工作在无人干预的低温、高辐射的空间环境中 ,因此星上计算机系统必须满足集成度高、寿命长、可靠性高、抗辐射能力强的要求。针对立体测绘小卫星的特点 ,设计了满足上述要求的集集中控制与分布控制优点于一身的星上计算机系统 ,对其可靠性进行了分析 ,并对提高其可靠性应采取的关键技术进行了简要的论述。

Study of Reliability for On-Board Computer System

Micro satellite with the characteristics of light weight, small volume, low power and strong function run in unmanned, low temperature, high radiant space environment. So on board computer system must hold such advantages as high integrated level, long service life, high reliability, strong anti radiation to meet the demand. This paper describes the on board computer system with advantage of centralized and distributed system to stereo mapping micro satellite, analyzes the reliability and elaborates the key technique improving the reliability.