Study Of Advanced Orbiting System Multiplexer

The studies are based on technical in Inner Mongolia in 2004——the key technical research on Advanced Orbiting Systems.AOS is a suit of systems and recommendation which is advanced by the Committee for Space Data Systems to meet the need of complex spacecraft to correspondence the various source multiplicity, the redundant reliability, the high speed which, large capacity, the standardization and the international cooperation demand.This paper introduces the Committee for Space Data Systems protocol and Advanced Orbiting Systems data system being put in practice. In this article, firstly, it analyzes the characteristics of AOS system, its data handing service, the grades of the service, the layered structure, the data unit structure and the data transmission process.This paper studies the design an implement method of channel multiplexer which are key technologies of the data system for AOS, and has also realized the multiplexer on the hardware platform of ARCA development kit base on homemade chip GT2000.Through deploying and multiplexing with dynamic priority system of virtual channel, the data with different rate from several path different link controller can be multiplexed, and one of them is high bit rate. Multi-path dynamic date can be transmitted with high quality through one physical channel.