摘要
程控数据关系到小卫星在轨任务能否正常执行,且需要在轨长期存储,因此需要进行容错设计.程控数据可分为程控指令、程控数据块及相对程控指令.文章提出一种可纠错程控数据设计方法,以单条不同类型的程控数据为单位进行纠错编码设计,在程控数据使用前或周期检错时刻来临时,星上软件实现程控数据的检错及纠错.该方法实现纠错不依赖卫星硬件平台,同三模冗余方法相比,不仅可以节约大量存储空间,而且性能更优.
The time tagged data are directly related to whether the task can be realized,which is very important for a satellite.The time tagged data are executed according to the timetable and often stored in on board computer for a long time.Fault tolerance design is needed to mitigate the influence of single event upsets.By function,the time tagged data which has different length can be classified as Time Tagged Telecommand,Time Tagged Data Block,and Relative Time Tagged Telecommand.An SEU mitigation method of time tagged details is proposed.Error correction coding and frame annotation for time tagged data of different length are done on the ground,and the information bits and the supervision bits are checked by the on board computer periodically or before the data to be used.The error correcting capability of the new method does not rely on hardware and is better than the traditional three mode redundancy method,and the memory space can be saved greatly.
作者
吕达
王啟宁
韩延东
李国军
李志刚
LV Da;WANG Qining;HAN Yandong;LI Guojun;LI Zhigang(DFH Satellite Co.,Ltd.,Beijing 100094,China)
出处
《空间控制技术与应用》
CSCD
北大核心
2022年第6期81-87,共7页
Aerospace Control and Application
基金
科技部国家重点研发计划(2016YFB0501300、2016YFB0501301)。
关键词
程控数据
单粒子
错误检测与纠正
time tagged data
single event upsets(SEU)
error detection and correction(EDAC)
