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空间站支持多任务动态时隙分配研究

Research on Dynamic Slots Allocation Supporting Multi-missions for Space Station
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摘要 为高效、灵活利用有限的空间信道资源,提高空间站运营模式的动态性,采用具有QoS(Quality-ofService)保证的空间站支持多任务动态时隙分配十分重要.根据空间站多任务特点,提出一种基于IP的空间站通信网络架构.根据探测任务的不同QoS等级,重点研究了多任务动态时隙分配方法,提出了一种基于预留的具有QoS保证的按需时隙分配方法.基于NS2和STK进行仿真,并得出如下结论:空间站经中继卫星到地面的数据传输时延在0.23～0.35 s;空间站到地面的端到端传输时延受激活的有效载荷或航天器数目影响,激活的有效载荷或航天器数越少,端到端的时延越小. To utilize the limited channel resources of space with efficiency and flexibility, and to improve the dynamics of space station operation, it is important to dynamically allocate slot with Quality-of-Service （QoS） for supporting multi-missions of space station. According to characteristic of space station, a networking architecture for space station is presented. The slot allocation methods based on QoS are emphasized, and a demand slot allocation with QoS guarantee based on reservation is proposed. Using NS2 and STK, the results of simulation show that the propagation delay between space station and ground varies from 0.232 s to 0.35 s, and that the less active payload or spacecraft number is, the less End To End （ETE） delay is.
作者 胡圣波 孟新 卞春江
机构地区 贵州师范大学智能信息处理研究所 中国科学院空间科学与应用研究中心
出处 《空间科学学报》 CAS CSCD 北大核心 2013年第1期63-71,共9页 Chinese Journal of Space Science
基金 载人航天工程预研项目(030104)
关键词 空间站 IP(Internet Protocol) 多任务 时隙分配 Space station, IP （Internet Protocol）, Multi-missions, Slot allocation
分类号 V443.1 [航空宇航科学与技术—飞行器设计]
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参考文献12

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二级参考文献7

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2013年 第1期

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