基于软件定义的微纳卫星综合电子设计与实现

Design and realization of micro/nano-satellite synthesized electronic system based on software definition

为了提高微纳卫星资源利用率,综合考虑体积、质量及功耗等多方面限制和要求,提出一种基于软件定义的高功能密度微纳卫星综合电子系统实现方案。用软件技术提升微纳卫星综合电子系统可靠度和系统指标,拓展在轨应用,实现"一卫星多任务"新型任务模式,同时充分发挥微纳卫星"小、快、好、省"的优势。该系统采用标准化可扩展体系架构,将通信、导航、能源、控制、载荷管理等功能解耦并融合,详细阐述了通用化硬件平台、面向多任务的软件系统架构、综合电子系统重构方法,最后形成原理样机。原理样机重量为约1.3 kg,功耗约为14 W,系统处理能力大于200 MIPS,模块间通信速率大于6.25 Gb/s,可以推广至各类型微纳卫星应用。

In order to improve the utilization rate of micro/nano-satellite resources,and comprehensively consider the limitation and requirements in the aspects of volume,weight and power consumption,a implementation scheme of the high function density micro/nano-satellite synthesized electronic system based on software definition is put forward. The software technology is used to improve the reliability and index of micro/nano-satellite synthesized electronic system and expand the in-orbit application,so as to implement the new task mode of "one-satellite multi-mission",and give full play to small,fast,good,economic advantages of the micro/nano-satellite. A standardized extensible architecture is adopted in the system to decouple and integrate the communication,navigation,energy,control,load management and other functions. The universalized hardware platform, multi-tasking software architecture and reconstruction method of the synthesized electronic system are elaborated. A prototype was formed,whose weight is about 1.3 kg,power consumption is about 14 W,processing capacity is greater than 200 MIPS, and inter-module communication rate is greater than 6.25 Gb/s. It can be expanded to the application of other micro/nano-satellites.