摘要
针对航天器在轨支持过程中多路遥测数据流的实时优选需求,尤其是对不同信道下传的不同频率遥测数据的优选要求,文章在综合考虑数据质量、连续性、收帧率、权重等因素后,设计了一种遥测数据流质量评价函数。以此为基础,提出了一种基于时间片轮转的多路遥测数据流实时优选方法,通过对一个时间片内各路待选遥测的质量综合评价,选择出最优结果作为下一个时间片数据优选输出,其计算复杂度低、实时性好,能够将自动优选与手动优选有机结合。经“天和”核心舱、天舟二号货运飞船和神舟十二号载人飞船的在轨遥测优选任务验证,结果表明:该方法能够很好地完成不同数据流的质量评价和比较选优,同时规避了数据流频繁切换可能带来的数据抖动,提供了高质量的输出结果,是一种航天器多路遥测数据流实时优选的高效途径。
Aiming at real-time selection of multi-channel telemetry data,especially for telemetry data with different frequencies for on-orbit spacecraft,a quality evaluation function is proposed based on the frame quality,continuity,receiving rate and weight etc.Then a real-time data selection algorithm of multi-channel telemetry data based on time slice circular scheduling is designed,which selects the optimal signal in this time slice as the output of the next time slice.It has low computational complexity,good real-time performance,and it can implement the combination of automatic data selection and manual data selection.The application results in the on-orbit support missions of the core module of space station Tianhe,Tianzhou-2 cargo ship and Shenzhou-12 manned spacecraft show that it gives high-quality output,based on the evaluation and comparison of telemetry data from different channels.It also avoids the frequent switching which may cause data jitter.Therefore,it is demonstrated to be an effective way for real-time selection of multi-channel telemetry data for on-orbit spacecrafts.
作者
储海洋
何晓宇
宋宏江
吴伟
崔帆
CHU Haiyang;HE Xiaoyu;SONG Hongjiang;WU Wei;CUI Fan(Beijing Institute of Spacecraft System Engineering, Beijing 100094, China)
出处
《航天器工程》
CSCD
北大核心
2021年第5期89-94,共6页
Spacecraft Engineering
基金
国家重大科技专项工程。
关键词
在轨航天器
多路遥测数据
数据优选
on-orbit spacecraft
multi-channel telemetry data
data selection
作者简介
储海洋,男,高级工程师,从事航天器测试及运营系统设计与研发工作,Email:chuhy_sean@126.com。
