针对载人航天空间应用与科学数据的在线分发共享需求，面向服务方式、业务流程和数据结构，分析了数据分发共享服务平台的功能与组成，设计了多层次、松耦合、易扩展的平台架构，解决了平台数据库逻辑模型设计、元数据自动提取、数据便捷在线服务、轨道仿真的技术问题与实现方式。平台应用可以实现海量、多源、异构空间应用与科学数据的统一，高效查询检索，以及典型应用成果宣传等；并已成功应用于天宫一号空间应用推广服务。%For the demand of efficient and convenient online distribution of manned space applica⁃tion and scientific data, researches on the service mode, the business process and the data structure were carried out in this paper. After analyzing the functions and compositions of the data distribution and sharing service platform, a multi⁃level, loosely coupled and extensible platform architecture was designed. Then, some key technologies and implementation methods were discussed in detail, inclu⁃ding the database logic model, the metadata automatic extraction, the convenient online data service and the orbit simulation. The platform could realize a unified and efficient query of massive, multi⁃source and heterogeneous space application and scientific data, as well as the promotion of typical ap⁃plication results etc. This platform has been applied in the Tiangong⁃1 service platform successfully.
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