【作者】 王琦；

【导师】 张辉； 张倩；

【作者基本信息】 西安电子科技大学 ， 电子与通信工程， 2010， 硕士

【摘要】 本文以背景工程的任务需求为输入,以CCSDS(空间数据系统咨询委员会)制定的空间数据系统标准化通信体系结构、通信协议与业务为参考,进行异步高速数据复接器工程样机的研制。重点对异步高速数据复接器的关键技术即虚拟信道调度策略进行仿真分析,获得对虚拟信道调度策略影响的若干个重要参数,并根据得到的参数合理优化设计了虚拟信道调度策略,作为工程样机的调度方案。本文主要以背景工程提出的八路不同速率位流数据为数据输入,建立了异步高速数据复接器的原理模型,描述了模型中各单元的功能。对异步高速数据复接器进行了功能和时序仿真,通过分析输出波形验证了模型的可行性。最终完成了异步高速数据复接器FPGA软件设计及硬件电路的设计、调试、测试,实验结果表明,该异步高速数据复接器能够正确复接八路异步高速数据,数据格式符合CCSDSAOS标准,复接效果与理论设计一致。同时,也验证了高码速率异步复接下的虚拟信道调度策略,表明调度方案合理,具有工程可行性。该工程样机的成功研制,为后续航天任务提供了借鉴,可加快后续航天任务的研制进程。更多还原

【Abstract】 In this paper, the background task of the project needs input to CCSDS (Consultative Committee for Space Data Systems) to develop a spatial data system standardized communications architecture, communications protocols and services as a reference, high-speed asynchronous data multiplexer prototype development projects. Focus on asynchronous high-speed data multiplexer of the key technologies that virtual channel scheduling strategy simulation, obtain virtual channel scheduling of a number of important parameters, and in accordance with the parameters obtained reasonable and optimal design of the virtual channel scheduling strategy, as an engineering prototype scheduling program.In this paper, the background rate of projects proposed by eight different data input bit stream data, the establishment of a high-speed asynchronous data multiplexer principles model, the model describes the function of each unit. Asynchronous high-speed data multiplexer to the functional and timing simulation, the output waveforms by analyzing the feasibility of the model.Finally completed the asynchronous high-speed data multiplexer FPGA software design and hardware design, debugging, testing, experimental results show that the high-speed asynchronous data multiplexer can correctly eight asynchronous high-speed data multiplexing, data format standards meet the CCSDS AOS, complex then design consistent with the theoretical results. It also verified the asynchronous re-took the high bit rate virtual channel scheduling strategy, scheduling scheme that is reasonable, with the engineering feasibility. The success of the project prototype development, to provide a reference for subsequent space mission, space mission to accelerate the development process of the follow-up.更多还原