| 全球覆盖稳定拓扑LEO/MEO双层卫星激光网络设计 |
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| 引用本文： | 李勇军,赵尚弘,吴继礼,李田,侯睿,刘兰.全球覆盖稳定拓扑LEO/MEO双层卫星激光网络设计[J].光电子．激光,2009,20(3):324-328. |
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| 作者姓名： | 李勇军 赵尚弘 吴继礼 李田 侯睿 刘兰 |
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| 作者单位： | 空军工程大学电讯工程学院,陕西,西安,710077
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 利用覆盖带法,设计了全球连续覆盖低轨道(LEO,lowearth orbit)/中轨道(MEO,mediumearth orbit)双层卫星光网络结构。LEO层是一个零相位因子walkerdelta星座,系统具准静态的Mesh逻辑结构。MEO层由赤道和极地轨道两个轨道组成,补充了LEO层对赤道地区覆盖的不足。覆盖性能结果表明,该网络上升轨道卫星对全球提供99.9%的平均覆盖,对我国提供100%的覆盖。链路性能仿真表明,双层卫星网络结构网络拓扑稳定,相邻节点仰角变化范围小,非常适合激光链路,与国外同类型星座相比所需卫星数少。
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| 关 键 词： | 卫星光通信 双层卫星光网络 星座设计 星间链路(ISL) |
Designing of optical two-layered satellite network of LEO/MEO with global coverage |
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| LI Yong-jun,ZHAO Shang-hong,WU Ji-li,LI Tian,HOU Rui,LIU Lan.Designing of optical two-layered satellite network of LEO/MEO with global coverage[J].Journal of Optoelectronics·laser,2009,20(3):324-328. |
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| Authors: | LI Yong-jun ZHAO Shang-hong WU Ji-li LI Tian HOU Rui LIU Lan |
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| Affiliation: | LI Yong-jun,ZHAO Shang-hong,WU Ji-li,LI Tian,HOU Rui,LIU Lan(Telecommunication Engineering Institute,Air force Engineering University,Xi′an,Shannxi 710077,China) |
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| Abstract: | Based on the technique of Coverage Street,the optical two-layered satellite network frame of LEO/MEO with continuous global converage is constructed.The layer of LEO satellites is the walker-delta constellation with zero phasing factor and it has the quasi-stable logical construction of Mesh.The layer of MEO satellites is formed by equatorial and polar orbit panes which compensates the disadvantage of bad coverage performance of LEO constellation to equator area.Simulation results of network coverage perfor... |
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| Keywords: | optical satellite communication optical two-layered satellite network constellation designing inter-satellite links(ISL) |
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