CCSDS命令与数据获取业务应用分析

针对传统星载数据管理系统应用层与数据访问层耦合度高,应用软件进行设备访问时须了解底层硬件细节、软件复用率低等问题,研究了CCSDS(Consultative Committee for Space Data Systems,空间数据系统咨询委员会)制定的CDAS(Command and Data Acquisition Service,命令与数据获取业务)的功能、特点及其工作原理,结合新一代综合电子系统的硬件模块功能特点,深入分析了如何在综合电子系统中实现CDAS.CDAS已在某预研课题综合电子样机中应用,测试试验表明,CDAS应用于综合电子系统可以为上层应用提供便捷的设备访问服务,为综合电子系统实现任务规划等复杂功能提供有力的技术保障.

Analysis and applications of CCSDS command and data acquisition service

Aiming at problems in traditional On-Board Data Handling (OBDH) system,including application layer and data access layer bind too tightly,applications layer must know device details when access device and software reuse ratio is very low.Functions,characteristics and basic working principles of Consultative Committee for Space Data Systems (CCSDS) Command and Data Acquisition Service (CDAS) is studied,and implementation of CDAS in spacecraft avionics system is analyzed based on analysis of the features of avionics system hardware module.CDAS has been used in spacecraft avionics system prototype computers.Experiment shows that CDAS can support application layer to access physical device conveniently,establish good technical foundation for sophisticated application (e.g.mission planning) in future spacecraft avionics system.