基于条件约束发布/订阅模式的航天测控数据交换系统

Spaceflight TT&C Data Exchanging System Based on Restrictive Condition Publish/Subscribe Pattern

针对传统发布/订阅技术通常对主题进行固化设置,难以满足航天测控数据灵活订阅的问题,设计一种基于条件约束发布/订阅模式的航天测控数据交换系统。通过研究分级递进式主题描述方法和模糊订阅方法,分析了系统核心的数据交换软件架构和数据过滤算法设计,对主题描述和数据订阅模型对传统发布/订阅技术进行改进,并在相关技术在原型系统的开发和测试中得到了验证。分析结果表明,该系统能够满足航天测控地面系统多源、高码速率测控数据交换要求。

Because the traditional publish/subscribe technology can not meet the requirements of spaceflight TT＆C data flexible subscribing based on fixed setting of subject, design the spaceflight TT＆C data exchanging system based on restrictive condition publish/subscribe pattern. By research on step by step subject describing method and fuzzy subscribe method, analyze data exchanging frame and data filtering algorithm design which is the system core. Then improve traditional publish/subscribe technology based on subject describe and data subscribe pattern. Verify it in related technology using in original system development and test. The analysis results show that the system can satisfy the requirements of multi-resource and high bit rate TT＆C data exchanging of spaceflight TT＆C ground system.