基于管道-过滤器模式的机载导航数据库格式化技术研究

针对飞行管理系统机载导航数据库应用需求,以管道-过滤器模式的软件架构体系为基础,设计了机载导航数据库格式化软件,实现标准导航数据格式到机载导航数据库格式的转换,生成适用于飞行管理系统的机载导航数据库文件系统。在分析机载导航数据库格式化的需求上,采用一种改进的管道-过滤器模式,通过裁剪和筛选导航数据的方法,降低数据容量。利用Access数据库作为中间数据库,建立不同类别的数据表,实现数据的快速查询和对比。通过实际的验证和应用表明机载导航数据库格式化软件是可行的,生成的机载导航数据库文件系统符合飞行管理系统要求,格式化后的数据是正确的。

Research on Format Technology of Airborne Navigation Database Based on Pipe-Filter Model

According to the application requirement of airborne navigation database of flight management systems, a formatting software for airborne navigation database on the basis of pipe-filter model software architecture of the systems has been designed. Thus a conversion from standard navigation database format to airborne navigation database format is possible, and a file system for airborne navigation database suitable for flight management systems is realized. Based on the analysis of airborne navigation database format demand, using an improved mode of pipeline and filter, data capacity is reduced by cutting and screening the navigation data. Using Aceess database as intermediate database to create different type of data tables, data can be fast queried and contrasted. The actual verification and application show that the format software of airborne navigation database is feasible, and the generated file system of airborne navigation database conforms to the requirements of the flight management system, and the formatted data is correct.