| With the rapid development of space technology and the expanding demand of space mission,the traditional satellite architecture and application mode can not meet the needs of space-based information network in the future.In this thesis,the architecture of space-based intelligent satellite(i SAT)is designed by analyzing the future satellite development needs and combining with the limitations and trends of satellite related technology development.Aiming at realizing the iSAT’s goal that multi-task and reconfiguration of task-oriented,the main contents of this thesis are as follows:(1)Through the analysis of future satellite mission needs,the concept of iSAT’s goal that multi-task and reconfiguration of task-oriented is expounded.A kind of space communication protocol and SIOS architecture put forward by the Consultative Committee for Space Data Systems are studied.On this basis,the thesis put forward the design of architecture of iSAT,three key technologies of which are pointed out,namely task modeling,task reconfiguration support business and reconstruction technology.At the same time,how to build the verification system of the architecture of iSAT and how to verify that three key technologies above to explain how the iSAT satellite serves the future satellite mission needs is studied.(2)Aiming at the characteristics of iSAT satellite’s multi-task and reconfiguration of task-oriented,the reconfigurable mission and reconfigurable resources of iSAT satellite are modeled and analyzed.The task reconfiguration based on CPU class and the task reconfiguration based on FPGA class are mainly studied,and the two kinds of tasks are described by the model.After that,the thesis studies how to map tasks to execution resources,and finally clarify the constraints of mapping.(3)Research and implement the support services needed by the reconfigurable task of the iSAT,and study the command and data acquisition services,message transmission services and file management services needed to support the upper-level mission application.Emphasis is laid on how the support services of the iSAT satellite accomplish the decoupling between the task application and the hardware to supporting the reconfiguration of iSAT task by ensuring the generality of related supporting services.(4)Analyze the characteristics of reconfigurable system of iSAT,especially the difference between reconfigurable system onboard and reconfigurable system ground.Then study and realize the reconfigurable configuration and reconfigurable management of task,the technical scheme of reconfigurable technology based ob study based on CPU class task and FPGA class task to realize the multi-task management of iSAT satellite and the purpose of reconfiguration.Based on the full study of the satellite technology at present,and in view of its shortcomings,combined with the characteristics of the iSAT,the research of this thesis has been fully theoretical analysis and experimental verification,and has a clear technical feasibility.The research in this thesis can provide theoretical and technical support for the architecture design of space-based iSAT. |
