面向民机综合环境监视的实时Linux设计与测试

Design and Test of Real-Time Linux Oriented to Civil Aircraft Integrated Environment Surveillance

综合环境监视(IAESS)是民机航空电子系统中的重要组成部分,其综合化程度的发展是当前研究的热点。将环境监视中的各项功能,如机载防撞系统(ACAS)、地形告警系统(TAWS)等进行软硬件综合,对软硬件系统中的操作系统提出了实时性、高可靠性等要求。针对这一问题,提出了一种新的基于虚拟中断技术的实时Linux设计与实现方法。在此基础上,对综合环境监视系统架构进行了分析和测试。试验结果表明,该实时Linux设计方案能够胜任实时性操作系统,可在未来的应用中很好地满足民机综合环境监视系统的实时性需求。

IAESS （integrated aircraft environment surveillance system）is an important component of the civil a- vionics system, the development of which is the focus on the current research. The software and hardware are integrated the various functions in the environment surveillance, such as ACAS （airborne collision avoidance system）, TAWS （ terrain awareness and warning system）, etc, real time, reliability requirements to the operating system are put forward. With consideration of this problem, a new design and implementation of the real-time Linux system which is based on the virtual interrupt technique is proposeed. On this basis, the architecture of the integrated environment surveillance system is analyzed. Experimental results show that the proposed scheme of the real-time Linux can suit for the real-time operating system, and can satisfy the real-time requirements of the integrated environment surveillance system of the civil aircraft.