当前,由于陆地信息系统已经无法充分满足信息化社会及国防信息化广域覆盖与多类信息融合共享的需求,在离地一定高度的空间建立信息基础设施是未来信息网络发展的需求。空间信息基础设施必须由空间卫星(亦称航天器)系统来完成对天基信息的感知、传输等一系列任务。因此,近年来国际航天活动频次居历史高位,新型发射方式促使航天器的数量激 At present, due to the land information system can not fully meet the needs of information society and national defense informatization wide area coverage and multiple types of information fusion and sharing, establishing information infrastructure at a certain height from the ground is the demand of future information network development. Spatial information infrastructure must be completed by the space satellite (also known as spacecraft) system of perception of space-based information, transmission and a series of tasks. Therefore, in recent years, the frequency of international space activities has been at a record high. The new mode of launching has prompted the proliferation of spacecraft