基于导航星座的天基光网络拓扑设计与仿真
发布时间：2018-10-30 07:39
【摘要】：针对北斗导航星座异轨面激光链路通信距离远、多谱勒频移严重、动态变化剧烈、影响通信定位精度的问题,提出了一种考虑通信距离和多谱勒特性的星座拓扑设计和优化方法。建立了北斗全球星座异轨星间链路运动模型,分析了多谱勒频移、多谱勒速度和多谱勒加速度的变化规律;建立了激光链路通信距离优化模型并提出了优化后的拓扑设计方案。仿真结果表明,优化后的拓扑方案能够降低通信成本,同时在保证网络通信时延性能恶化不超过4%的情况下对单星建链数量进行简化,降低了系统建设成本。仿真结果表明,上述方法是一种经济可行的星座拓扑设计方案,为空间信息传输优化提供了参考。
[Abstract]:Aiming at the problem that the communication distance is long, the frequency shift of Doppler is serious and the dynamic change is violent in Beidou navigation constellation, the accuracy of communication location is affected. A topology design and optimization method for constellation considering communication distance and Doppler property is proposed. The motion model of the intersatellite link of Beidou global constellation is established, the variation law of Doppler frequency shift, Doppler velocity and Doppler acceleration is analyzed, and the optimized communication distance model of laser link is established and the optimized topology design scheme is proposed. The simulation results show that the optimized topology scheme can reduce the communication cost and simplify the number of single star built chains and reduce the cost of system construction while ensuring that the network communication delay performance is not more than 4%. The simulation results show that the above method is an economical and feasible scheme of constellation topology design and provides a reference for the optimization of spatial information transmission.
【作者单位】： 北京跟踪与通信技术研究所;
【分类号】：V443.1
，
本文编号：2299370
[Abstract]:Aiming at the problem that the communication distance is long, the frequency shift of Doppler is serious and the dynamic change is violent in Beidou navigation constellation, the accuracy of communication location is affected. A topology design and optimization method for constellation considering communication distance and Doppler property is proposed. The motion model of the intersatellite link of Beidou global constellation is established, the variation law of Doppler frequency shift, Doppler velocity and Doppler acceleration is analyzed, and the optimized communication distance model of laser link is established and the optimized topology design scheme is proposed. The simulation results show that the optimized topology scheme can reduce the communication cost and simplify the number of single star built chains and reduce the cost of system construction while ensuring that the network communication delay performance is not more than 4%. The simulation results show that the above method is an economical and feasible scheme of constellation topology design and provides a reference for the optimization of spatial information transmission.
【作者单位】： 北京跟踪与通信技术研究所;
【分类号】：V443.1
，
本文编号：2299370
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