“实践五号”卫星星务管理系统

中国在“实践五号”（SJ－5）卫星上首次应用并通过考验的星务管理系统，是实现卫星运行管理、自主控制、信息传送以及星地大回路操作的综合自动化系统。它是由计算机网络来协调、控制星上各种功能部件的相互联系，完成包括信息流、动作流、能量流的动态作业所形成的一种星载柔性服务系统。它具备有如下主要技术创新点：构成整星多级控制；引入内嵌式管理执行单元；星上现场网络技术；构造硬件和软件的封装技术；利用商用实时多任务操作系统；兼容型份包遥测技术；复合型遥控和遥操作实现技术；信息多路径的冗余备份和系统重构技术；测试床技术；分级整体辐射加固技术。星务系统的应用既提高了整星自治能力。自动化和智能化水平，又分散了整星失误风险。从而，提高了整星级可靠性和运行功能的有效性。

Satellite Keeping Operation System for Chinese SJ-5

Satellite Keeping Operation (SKO) system first applied to chinese mission is an comprehensive automatic system which accomplishes satellite operating management, autonomous control, information transmission and ground-to-satellite loop operation. SKO is the flexible satellite-borne system which cooperates and schedules contact between various satellite components with use on-board network to perform dynamic stream tasks including information stream, action stream and energy stream. SKO has several innovations as follows: multilevel control, embedded management executive unit, field network technology, hardware/software encapsulation technology, utilization of the commercial RTOS, compatible package telemetry, compound tele-command and tele-operation technology, data multi-path and reconstruction technology, test-bed technology, radiation shielding technology, etc. Autonomous capability and intelligence of the satellite are enhanced and risk of the mission is decreased by the application of SKO to SJ-5 mission. Also top-level reliability and efficiency of mission operation are improved.