单片系统在星载计算机上的应用

小卫星的设计目标之一是低成本、轻质量以及研制周期短，使用商用现货的元器件和开发工具可以更好的支持这一思想。可编程单片系统是其中的一项关键技术。这种单片系统方案可以降低小卫星电子系统(比如数管，通信和控制系统)的体积、复杂度和成本。该文阐述了单片系统在航天器上的应用，并以一星载计算机的单片系统作为设计举证，包括一个微处理器软核、其他的外围接口设备软核及所采用的目标芯片，并对以微处理器软核为核心的片上系统如何实现进行描述，同时提供了通过片上总线集成外围接口设备软核的方法。

Application of Programmable System-on-A-Chip for Small Satellite Computers

Small Satellites aim to achieve low-cost, lightweight and fast access to space and this is normally supported by the use of commercial-off-the-shelf components and development tools. System-on-a-programmable-chip is a major enabling technology. Such a single-chip solution to the core data handling, communications and control systems will dramatically reduce size, complexity and cost of small satellites electronics. This paper is concerned with the implementation of a small satellite on-board computer (OBC) on a single programmable logic chip. Integration of soft intellectual property cores forming a main subsystem of the system-on-a-chip OBC (SoC-OBC) is detailed. A XILINX Virtex Field Programmable Gate Array (FPGA) is used for prototyping of the SoC. This single-chip OBC is composed of Microprocessor IP Core and other soft peripheral IP core. Implementation methods and results would be described and demonstrated in this paper.