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一种低轨遥感卫星按需数据传输机制

毕梦格 徐伟琳 侯蓉晖

毕梦格, 徐伟琳, 侯蓉晖等 . 一种低轨遥感卫星按需数据传输机制[J]. 北京航空航天大学学报, 2019, 45(7): 1467-1473. doi: 10.13700/j.bh.1001-5965.2018.0609
引用本文: 毕梦格, 徐伟琳, 侯蓉晖等 . 一种低轨遥感卫星按需数据传输机制[J]. 北京航空航天大学学报, 2019, 45(7): 1467-1473. doi: 10.13700/j.bh.1001-5965.2018.0609
BI Mengge, XU Weilin, HOU Ronghuiet al. An on-demand data transmission mechanism for LEO remote sensing satellite[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(7): 1467-1473. doi: 10.13700/j.bh.1001-5965.2018.0609(in Chinese)
Citation: BI Mengge, XU Weilin, HOU Ronghuiet al. An on-demand data transmission mechanism for LEO remote sensing satellite[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(7): 1467-1473. doi: 10.13700/j.bh.1001-5965.2018.0609(in Chinese)

一种低轨遥感卫星按需数据传输机制

doi: 10.13700/j.bh.1001-5965.2018.0609
基金项目: 

国家自然科学基金 61571351

国家自然科学基金 61472308

国家自然科学基金 61572466

国家自然科学基金 61771296

国家重点研发计划 2017YFB1400100

高等学校学科创新引智计划 B16037

中兴通讯研究基金 

陕西省重点研发计划(中低轨卫星通信安全组网关键技术研究与平台开发) 

详细信息
    作者简介:

    毕梦格  女, 硕士研究生。主要研究方向:卫星网络路由算法

    徐伟琳  男, 博士。主要研究方向:空间网络技术

    侯蓉晖  女, 博士, 教授, 博士生导师。主要研究方向:无线通信、卫星通信、空间网络技术

    通讯作者:

    侯蓉晖, E-mail: rhhou@xidian.edu.cn

  • 中图分类号: V474;TN927

An on-demand data transmission mechanism for LEO remote sensing satellite

Funds: 

National Natural Science Foundation of China 61571351

National Natural Science Foundation of China 61472308

National Natural Science Foundation of China 61572466

National Natural Science Foundation of China 61771296

National Key R & D Program of China 2017YFB1400100

111 Project B16037

ZTE Funding Program 

Key R & D Program Project for Shaanxi Province (Research on the Key Technology and Platform Developing of MEO/LEO Satellite Communication Security) 

More Information
  • 摘要:

    针对现有低轨(LEO)遥感卫星数据下行机制普遍存在的低效率、高时延、传输路径易损等问题,提出了一种新型的遥感数据传输机制。所提机制中,支持地面站按需实时定位遥感影像资源,并建立定位卫星到达地面站的传输路径;在建立传输路径时,考虑到协作卫星与地面的可视时间有限,提出了以路径持续服务时间最大化为度量的路由算法,降低因协作卫星改变而引入的传输时延。基于NS3仿真平台实现了所设计的数据传输机制,实验表明,提出机制相比现有数据传输机制可降低数据传输时延,减少数据丢失。

     

  • 图 1  遥感数据下行示意图

    Figure 1.  Schematic diagram of remote sensing data downlink

    图 2  连续数据下行实例

    Figure 2.  An example of continuous data downlink

    图 3  RREQ消息格式设计

    Figure 3.  Format design of RREQ packet

    图 4  网络负载状态对算法性能的影响

    Figure 4.  Influence of network load states on algorithm performance

    图 5  传输路径距离对算法性能的影响

    Figure 5.  Influence of transmission path distance on algorithm performance

    表  1  仿真参数设置

    Table  1.   Simulation parameter setting

    参数 数值
    轨道高度/km 780
    轨道数 6
    轨道中卫星数 10
    轨道倾角/(°) 86
    星间链路数 4
    星间链路带宽/(Mbit·s-1) 10
    数据传输速率/(Kbit·s-1) 800~1 400
    数据包平均长度/Bytes 1 000
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-10-23
  • 录用日期:  2019-03-08
  • 网络出版日期:  2019-07-20

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