大型载人航天器数据存储服务系统设计与应用OA北大核心CSTPCD

In response to the characteristics of large scale data,multi-source concurrent storage,high platform security requirements,and long-time in orbit operation of manned spacecraft,a general archi-tecture of data storage service system applicable to large manned spacecraft is proposed in this paper.The paper also introduces several key technologies used in data storage service system,which adopts the metadata separation method to realize the storage and playback of any amount and type of critical data.Through design methods such as data synchronization and electrical isolation,the system has the ability of on-orbit maintenance and replacement.The method of storage space mapping is adopted to shield FLASH bad block faults,which ensures the high reliability of data storage during long-term operation.The data storage service system proposed in the paper serves the on-orbit application,verifying the feasi-bility of the design and providing reference for the design of the subsequent data storage service system applicable to manned spacecraft.