多层卫星网络与地月卫星网络仿真

发布时间：2018-06-03 18:58

本文选题：NS仿真 + 延迟容忍网络　；参考：《铁道学报》2017年04期

【摘要】：在NS2卫星模块的基础上,借助卫星模拟工具STK,实现多层卫星网络与地月卫星网络的仿真环境搭建。通过增加MEO星座以及相关星间链路,实现LEO、MEO、GEO之间多层卫星网络;通过增加GEO卫星、绕月卫星、月面终端以及对应链路,实现GEO卫星、绕月卫星以及月面终端之间的互联互通。在该环境的基础上,设计多种仿真场景并进行测试。通过与单层低轨道卫星对比,说明多层卫星网络能有效减小中继时延。通过与STK仿真结果进行比较,验证新增的地月系统的合理性,基于"天链一号"中继系统设计数据中继和地月通信场景,说明长时延的通信场景中DTN协议能够提高网络吞吐量,结果表明仿真环境设计有效合理。
[Abstract]:On the basis of NS2 satellite module, the simulation environment of multi-layer satellite network and earth-moon satellite network is built with the aid of satellite simulation tool STK. By adding the MEO constellation and related intersatellite links, the multilayer satellite network between Leo and MEOOGEO can be realized, and the interconnection among GEO satellites, lunar satellites and lunar terminals can be realized by adding GEO satellites, lunar terminals and corresponding links. Based on this environment, a variety of simulation scenarios are designed and tested. Compared with single layer low orbit satellite, it is proved that multilayer satellite network can effectively reduce relay delay. By comparing with the simulation results of STK, the rationality of the new ground-moon system is verified. Based on the "Tianchain-1" relay system, the data relay and ground-moon communication scenarios are designed. It is shown that the DTN protocol can improve the network throughput in the communication scenarios with long delay. The results show that the simulation environment design is effective and reasonable.
【作者单位】：北京交通大学电子信息工程学院;
【基金】：国家高技术研究发展计划(863计划)(2015AA015702) 国家自然科学基金(61271202) 中央高校基本科研业务费专项资金(W16JB00270)
【分类号】：TN927.2

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