The Research And Implementation Of Realtime Multiprocessor Operating System On On-Board Computer System

In recent years, with the rapid development of the satellites, the on-board multiprocessor operating system becomes the trend of the on-board Embedded Operating System. Based on the Embedded Multiprocessing System of on-board computer, this article elaborates the research and implementation of the realtime on-board multiprocessing operating system OEMS (On-board Embedded Multi- processing System).Firstly, this article puts forward an on-board multiprocessor system structural mode on the basis of the research of parallel system's communication and memory structure modes.Besides, it also elaborates the research of realtime and parallelism of OEMS and focuses on the multiprocessor support module of OEMS. On one hand, it summarizes and puts forward a three-layer multiprocessor support structure with the traits of stratified and modularized based on sharing memory. On the other hand, it also poses a safe and effective multiprocessor support mechanism including double modes sharing memory organization pattern and safe and realtime communication request handling mechanism. This article also does the test on OEMS's function and performance on the hardware fitting the structure module of on-board multiprocessor system.Finally, this article introduces the designation and implementation of the on-board multiprocessor operating system stimulator Psis. Psis transplants from ERC32 processor to Leon2 processor and stimulates from single processor system to four processors parallel system based on the single processor stimulator sis of ERC32 provided by GDB.