双层混合卫星网络优化设计及覆盖性能评估

发布时间：2018-03-12 22:44

本文选题：卫星星座设计　切入点：最差观察点　出处：《电子技术应用》2017年06期 　论文类型：期刊论文

【摘要】：针对单层卫星网络抗毁能力差、处理时延高以及三层卫星网络管理复杂、链路冗余度高等问题,分别采用Walker星座和极轨星座对MEO和LEO卫星进行了组网分析和星座设计,提出了一种双层混合卫星网络优化设计方案;同时,针对传统卫星覆盖性能指标不能统一评价不同构型卫星星座的问题,提出了一种基于层次分析法模型的不同构型卫星星座统一评估模型。仿真结果表明,所提出的方案不仅能够很好地提升对中国区域的覆盖率,而且可以有效地降低平均间隙时长和平均响应时间,从而满足对中国地区全天时覆盖的总体设计要求。
[Abstract]:Aiming at the problems of poor survivability of single-layer satellite network, high delay, complex management of three-layer satellite network and high link redundancy, the network analysis and constellation design of MEO and LEO satellites are carried out by using Walker constellation and polar orbit constellation, respectively. In this paper, an optimal design scheme of two-layer hybrid satellite network is proposed, and aiming at the problem that the traditional satellite coverage performance index can not be uniformly evaluated for different satellite constellations, A unified evaluation model of satellite constellations with different configurations based on AHP model is proposed. The simulation results show that the proposed scheme can not only improve the coverage of China's regions, but also improve the performance of satellite constellations. Moreover, it can effectively reduce the average gap time and response time, thus meeting the overall design requirements for all-day coverage in China.
【作者单位】：重庆邮电大学通信与信息工程学院;
【基金】：国家自然科学基金(61601075) 重庆市科委自然科学基金项目(cstc2016jcyj A0174) 重庆市教委自然科学基金项目(KJ1500440)
【分类号】：TN927.2

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