Design Of Aerospace Distributor Communication System Based On CCSDS Protocol

In recent years, with the development of space technology, the data processing of spacecraft tends to be diversity, complexity and following the international standards. In response to the trend of requirements of new spatial data communications technology, it is the most important to select the appropriate communication standards for communications system of space distributor. CCSDS(Consultative Committee for Space Data Systems)protocol can break through the limitations of conventional PCM system of fixed sampling rate and a fixed encoding format to meet the star on the complex source data transmission requirements.So it becomes the protocol of choice for communication system of space distributor.This graduate thesis firstly introduces the development history of CCSDS protocol, and comparing with the traditional PCM system, demonstrates the CCSDS protocol applied to the superiority and necessity of communications system of space distributor; Referencing to series agreements of CCSDS and the practical need of this topic, I design the overall framework and kind of function source package for communications system of space distributor; Then, I also design five service interface to afford the communication of source package and make software modularization. Finally, for the need of communications system of space distributor, I use the five service interface to completed three major functions of telemetry, telecontrol and electric reset.It is a reasonably effective way which afford demand of spatial data communications technology to design communications system of space distributor by using the standard of CCSDS in the future. The graduate thesis not only provides reference for the design of communications system of space distributor, but also for the international cooperation in the design of communications system of space distributor and the application of CCSDS protocols in the future.