The traditional spacecraft is large and complex monolithic satellite. The result of this architecture is high launching and maintenance costs. In this paper, modular spacecraft is taken as research object. Coupled with U. S. DARPA's F6 program, the concept of fractionated spacecraft cluster is illuminated in this paper, and then data types and basic functions are analyzed. Finally, the key technologies such as autonomous flight control, wireless ad hoc networks, wireless laser communication, modularization and miniaturization are discussed.%传统航天器多采用大型、复杂、整体集中式架构,导致发射和维护成本高.文章以模块化航天器为研究对象,结合美国国防预先研究计划局(DARPA)的F6计划,阐述了“分布式集群空间飞行器”系统概念,分析了系统的数据类型与基本功能,讨论了自主飞行控制、无线自组织网络、无线激光通信和模块化、小型化等关键技术,可为实现模块化航天器系统提供借鉴.
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