| 低轨卫星通信系统星座设计与性能仿真 |
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| 引用本文： | 刘绍奎,;刘虎东.低轨卫星通信系统星座设计与性能仿真[J].全球定位系统,2014(3):19-23. |
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| 作者姓名： | 刘绍奎 ;刘虎东 |
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| 作者单位： | [1]95970部队,北京100076; [2]94285部队,山东诸城262200 |
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| 摘 要： | 低轨卫星通信系统在通信领域发挥着越来越重要的作用。针对不同类型星座覆盖能力和星际链路建立条件存在的差异，设计了极轨道和倾斜圆轨道低轨卫星星座，利用STK验证了两种星座的覆盖能力和星际链路AER特性，利用NS2对两种星座卫星网络的时延、吞吐量和丢包率等性能指标进行了仿真，并对所得数据进行了对比分析，结果表明：在由32颗卫星（轨道高度1450 km ）构成的低轨星座中，极轨星座的全球覆盖能力、星际链路建立条件和卫星网络性能优于倾斜圆轨道星座，更适合于构建全球低轨卫星通信系统。
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| 关 键 词： | 星座设计 星际链路 覆盖 时延 STK NS2 |
Constellation Design and Performance Simulation of LEO Satellite Communication System |
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| Institution: | LIU Shaokui, LIU Hudong (1. Unit 95970 of PLA , Beijing 100076, China ;2. Unit 94285 of PLA , Zhucheng Shandong 262200, China) |
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| Abstract: | LEO satellite communication weighs more and more in communication system now and future .Since different types of constellations have rather different performances in coverage ability and inter-satellite link building conditions ,a polar and an inclined circular orbit constellation were designed in this paper .Coverage ability and ISL performance of con-stellations were simulated by STK while delay ,throughput and jitter of satellite network were simulated by NS2 .The results of simulations were compared and analyzed which indi-cates that ,in a constellation with 32 satellites ,with orbit altitude 1 450 km ,polar orbit con-stellation is more suitable to build global LEO satellite communication system than inclined circular orbit because of its nicer performance in global coverage ,ISL building conditions and network identity . |
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| Keywords: | Constellation design inter-satellite link coverage timedelay throughput STK NS2 |
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