支持任务自主接入的星务软件重构方法

Research on satellite software reconfiguration method for autonomous access of task

目前卫星设计领域软件在轨重构方式安全性低,灵活性差,大大制约了星务软件在轨功能的持续更新与扩展需求。针对以上背景,提出了一种支持任务级重构的星务软件架构,介绍了基于容错SRAM的典型硬件环境和基于软总线的软件分层设计方法;开展对任务自主接入及硬件重启后自主恢复机制的研究,提出支持任务自主接入的星务软件重构流程及补丁协议,最终针对新型软件架构和任务接入方法进行仿真,验证了该方法的安全有效性,解决了目前星务软件重构灵活性差的问题,为提升卫星软件好用易用性提供了解决方案。

In the field of satellite designing,the software reconfiguration method has a bad performance in security and flexibility,for which the requirements of sustainable updating and extending are obviously restrained.To solve the problem,a structure of satellite software for task-level reconfiguration was presented.Meanwhile,the typical hardware environment based on a fault-tolerant SRAM and a multiple-level design approach based on soft-bus were described,and the mechanism of task auto recovery after the computer′s restarting was studied.The data protocol of software reconfiguration was proposed to guide the engineer to generate the patch.A simulation test was conducted based on the software architecture and process of task auto accessing,the results show that the proposed method is safe and effective,which can improve the performance of satellite software in the aspect of flexibility and supply a good solution for improving the usability of the satellite software.