| 一种兼顾卫星导航系统星间观测及通信的链路分配算法 |
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| 引用本文： | 石磊玉,向为,唐小妹.一种兼顾卫星导航系统星间观测及通信的链路分配算法[J].宇航学报,2011(9). |
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| 作者姓名： | 石磊玉 向为 唐小妹 |
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| 作者单位： | 国防科技大学电子科学与工程学院卫星导航研发中心; |
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| 基金项目： | 教育部新世纪人才支持计划(NCET-08-0144) |
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| 摘 要： | 卫星导航系统星间采用点波束建立星间链路时,由于星上波束数量小于可建立星间链路的卫星数量,因此便产生了如何有效分配有限波束来建立星间链路的问题。针对该问题首先利用星座运行的周期性提出了一种适用于星间观测及星间通信的拓扑处理方式,并以该拓扑处理方式为基础提出了一种链路分配算法。算法在保证星间观测数量最大化的前提下,以降低整网通信代价为优化目标,尽管为了保证星间观测数量会不可避免地导致通信性能的部分损失,但是仿真结果表明算法的性能整体上优于铱星系统所采用的网状链路分配方法的性能。
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| 关 键 词： | 链路分配算法 优化目标 星间链路 卫星导航系统 |
A Link Assignment Algorithm Applicable to Crosslink Ranging and Data Exchange for Satellite Navigation System |
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| SHI Lei-yu,XIANG Wei,TANG Xiao-mei.A Link Assignment Algorithm Applicable to Crosslink Ranging and Data Exchange for Satellite Navigation System[J].Journal of Astronautics,2011(9). |
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| Authors: | SHI Lei-yu XIANG Wei TANG Xiao-mei |
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| Institution: | SHI Lei-yu,XIANG Wei,TANG Xiao-mei(Satellite Navigation and Positioning R&D Center,College of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China) |
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| Abstract: | In satellite navigation system,satellites can transmit spot beam signals to fulfill crosslink ranging and communication.Because the number of transceivers on board is limited,each satellite has less number of transceivers than its visible satellites.It is necessary to solve how to assign these transceivers to point other satellites effectively in order to meet the both requirements for crosslink ranging and data exchange.A topology model for both requirements is proposed in this paper.Based on the topology ... |
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| Keywords: | Link assignment algorithm Optimization goal Inter-satellite link Satellite navigation system |
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