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arXiv 2010.03098eess.SP
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下一代卫星网络的自由空间光学

Free Space Optics for Next-Generation Satellite Networks

Aizaz U. Chaudhry, Halim Yanikomeroglu

摘要:

自由空间光学(FSO)是指室外环境中的光学无线通信。本文的目的是分析的作用,自由空间光通信设想发挥在创建下一代卫星网络。首先,向读者介绍FSO链路的类型和基本FSO系统的功能。接下来,提供了用于卫星间链路(ISL)的FSO和射频(RF)技术的比较,包括在低地球轨道卫星之间使用时FSO和RF链路之间的比较。然后,讨论了自由空间光通信和激光星间链路的类型,以及建立激光星间链路所面临的挑战、激光星间链路的特性和激光星间链路终端的性能。然后,强调了卫星星座的参数,并探讨了SpaceX即将推出的巨型星座Starlink的不同方面。此外,光无线卫星网络,这是通过利用激光星间链路创建的检查。最后,一个用例是研究下一代光无线卫星网络,预计到2020年代中后期。

英文摘要:

Free space optics (FSO) refers to optical wireless communications in outdoor environments. The aim of this paper is to analyze the role that FSO is envisaged to play in the creation of next-generation satellite networks. To begin with, the reader is introduced to the types of FSO links and functionalities of a basic FSO system. Next, a comparison of FSO and radio frequency (RF) technologies for inter-satellite links (ISLs) is provided, including a comparison between FSO and RF links when employed between low Earth orbit satellites. After that, the types of FSO or laser ISLs are considered, and the challenges in establishing laser ISLs, the properties of laser ISLs, and the capabilities of terminals for laser ISLs are discussed. Then, the parameters of a satellite constellation are highlighted, and different aspects of SpaceX's upcoming mega-constellation Starlink are explored. In addition, the optical wireless satellite network that is created by utilizing laser ISLs is examined. Finally, a use case is investigated for next-generation optical wireless satellite networks that are envisioned by the mid to late 2020s.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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