摘要
针对卫星地面应用系统支持多星多任务的运行控制需求,设计了数传数据实时处理系统。采用调度中心与处理程序集协同工作的方式,在不借助消息传递接口(MPI)和第三方调度软件的前提下,实现了数传处理作业的集中式调度、分布式并行处理;设计处理作业调度策略,实现了实时任务优先、事后任务排队以及处理资源负载均衡;设计模块化拆分的处理程序集,实现了处理系统的高性能、可复用。工程实践结果表明:文章所介绍的处理系统能够同时支持4颗卫星、3个地面站、实时及事后2种模式数传处理任务,处理的实时数据率优于150 Mbit/s。
To meet the requirement of running control for multi-satellite and multi-mission in ground application system,a real-time transmission data processing system is designed,which is composed of dispatching center and processing modules.Concentrated scheduling and parallel processing are implemented by cooperative work of them without MPI and third-party software.Features of real-time task precedence,non-real-time task queuing and load balancing are achieved by the design of process-scheduling policy.Procedures based on module division makes the realtime processing system reusable and high performance.Practical result shows that the processing system proposed in this paper is capable of support to real-time or non-real-time tasks of 4satellites,3ground stations at the same time,and it can achieve real-time transmission data rate of150Mbit/s.
出处
《航天器工程》
北大核心
2016年第4期60-66,共7页
Spacecraft Engineering
关键词
数传数据
多星多任务
并行处理
负载均衡
transmission data
multi-satellite and multi-mission
parallel processing
load balancing
