元数据的数据解析技术及在卫星设计中的应用

Research and Using of the Technology of Metadata Parsing in Satellite Design

为解决卫星设计数据的实时采集、快速存储的要求,在航天器的数字化研制过程中,引入元数据的处理技术,目前已经形成大量元数据库。由于元数据特有的逻辑结构,元数据的业务还原、数据再利用方面存在瓶颈,提出一套统一的数据服务模型,用于元数据的数据解析,提高设计数据的检索、分析和再利用的能力。深入讨论了卫星设计元数据的解析策略,具体描述了统一数据服务模型的异步处理消息队列、插件式应用开发服务及派生的OLAP数据库的实现方法,并以卫星低频电缆网辅助设计系统为例,具体说明采用这种方法,实现元数据解析和利用的过程,验证了方法的可行性,在实际工作中获得了较好的效果。

For the real-time collection and quick storage of satellite design data during the digital manufacture of spacecraft,it is needed to introduce the technology of metadata and build a lot of meta databases.Because the logic structure of metadata,operation reversion and data reuse of metadata have some difficulties.By this,the model of Integrated Data Service is introduced and Metadata parsing is used,in order to improve the ability to query,analyse and reuse data.Thorough discussion is presented on how to analyze metadata and detailed studies are made on the realization technology of MSMQ theories,plug-in application service and OLAP database.And with Satellite Cable Design System as an example,the workability of this methodology is validated and the effect in practice is positive.