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Scintillation due to atmospheric turbulence on optical GEO and MEO satellite links: Time series synthesizer for system level simulations
International Journal of Satellite Communications and Networking ( IF 1.7 ) Pub Date : 2020-10-27 , DOI: 10.1002/sat.1383
Nikolaos K. Lyras 1 , Charilaos I. Kourogiorgas 1 , Athanasios D. Panagopoulos 1
Affiliation  

Optical satellite links have been proposed in order to cover the increasing capacity demand for satellite networks. The reliable design of the performance of optical satellite links is of utmost importance. In the present paper, an analytical methodology for the generation of time series of scintillation due to atmospheric turbulence of optical satellite links is proposed. Under cloud-free line of sight, scintillation causes the degradation of link's quality. In order to design adaptive transmission techniques for scintillation compensation, an accurate channel model for time series synthesis is required. The proposed synthesizer is based on stochastic differential equations (SDEs) driven by fractional Brownian motion and generates log-amplitude time series for plane and spherical waves affected by turbulence. The links are considered between Ground and Geostationary or Medium Earth Orbit satellites. The synthesizer is validated using the theoretical aspects of scintillation considering the first- and second-order statistics. Additionally, the performance of the synthesizer for the case of Geostationary is validated with data from ARTEMIS optical satellite link experiment carried out by European Space Agency. The proposed synthesizer can be directly employed for the system performance of transmission techniques for optical satellite forward and reverse links taking into account the scintillation effects.

中文翻译:

光学 GEO 和 MEO 卫星链路上的大气湍流引起的闪烁:用于系统级模拟的时间序列合成器

为了满足卫星网络日益增长的容量需求,已经提出了光卫星链路。光学卫星链路性能的可靠设计至关重要。在本文中,提出了一种用于生成由光卫星链路的大气湍流引起的闪烁时间序列的分析方法。在无云视线下,闪烁会导致链路质量下降。为了设计用于闪烁补偿的自适应传输技术,需要一个用于时间序列合成的准确信道模型。所提出的合成器基于由分数布朗运动驱动的随机微分方程 (SDE),并为受湍流影响的平面波和球面波生成对数幅度时间序列。考虑地面和地球静止或中地球轨道卫星之间的链路。考虑到一阶和二阶统计,使用闪烁的理论方面验证合成器。此外,合成器在地球静止情况下的性能通过欧洲航天局进行的 ARTEMIS 光学卫星链路实验的数据进行了验证。考虑到闪烁效应,所提出的合成器可以直接用于光学卫星前向和反向链路传输技术的系统性能。地球同步情况下合成器的性能通过欧洲航天局进行的 ARTEMIS 光学卫星链路实验的数据进行了验证。考虑到闪烁效应,所提出的合成器可以直接用于光学卫星前向和反向链路传输技术的系统性能。地球同步情况下合成器的性能通过欧洲航天局进行的 ARTEMIS 光学卫星链路实验的数据进行了验证。考虑到闪烁效应,所提出的合成器可以直接用于光学卫星前向和反向链路传输技术的系统性能。
更新日期:2020-10-27
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