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基于学科链的卫星系统工程方法与实践
宝军林, 淑杰熊, 笑月李, 夏林
中科院微小卫星创新研究院 导航卫星研究所, 上海 201203
摘要:
目前,绝大多数的卫星系统都是按照分系统来设计的,这种方法的弊端在于分系统内部重复的功能模块对整星而言是冗余的。因此,为了摒除按照分系统设计的卫星系统缺点以提高系统可靠性,我们设计了一个全新的卫星系统,其基于学科功能链。按照学科功能链,我们将卫星系统划分为控制学科链、结构热学科链、电子学学科链、载荷学科链,显著提高了卫星系统的性能、可靠性和功能密度,同时有效降低了研制成本,缩短了研制周期。最终,基于学科链的卫星系统已成功应用于北斗导航全球系统的首发卫星上。本文阐述了基于学科链设计的核心思想和四个主要的学科链内涵。
关键词:  学科链;内部可靠性;卫星系统设计;功能密度
DOI:10.15982/j.issn.2095-7777.2019.01.007
分类号:V448
基金项目:
Satellite System Engineering Methods and Practices Based on the Subject Chain Method
Baojun LIN, Shujie XIONG, Xiaoyue LI, Xia LIN
Institution of Navigation Satellite, Innovation Academy for Microsatellites of Chinese Academy of Sciences, Shanghai 201203, China
Abstract:
At present, most satellite systems are designed as a hierarchy of subsystems. However, the subsystems with repetitive function in each subsystem are cumbersome. Thus, to overcome the shortage of the subsystem method and improve the inherent reliability of the satellite system, a new method based on the subject chain method is introduced. Based on the method, the satellite system is segmented into the control chain, the structure-thermal chain, the electronics chain and the payload chain. The inherent reliability of the satellite system is significantly enhanced, and the functional density is improved and the cost is reduced. Furthermore, the subject chain method has been successfully applied into the development for the first-launched Beidou global navigation satellite. The development cost and time are reduced markedly. In this paper, the core idea of the subject chain method and the description of four basic subject chains are also presented.
Key words:  subject chain;inherent reliability;satellite system design;functional density