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Modelling of Atmospheric Impairments in Stratospheric Communications

机译：平流层通信中大气损伤的建模

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摘要

Stratospheric communication systems operating in the millimetre frequency bands are subject to atmospheric impairments caused by rain and scintillation. In this paper we address propagation channel modelling of these atmospheric impairments. In particular, we present a rain fading and a scintillation fading channel model for stratospheric communications. Rain fading is modelled according to the modified DLR segment approach for generating channel attenuation time series taking into consideration the specifics of stratospheric communication systems, namely the variable elevation angle and different carrier frequency. Additional fading due to scintillation, which may be harmful in deep fades caused by the rain, is modelled by adjusting the satellite scintillation channel model so that the amount of scintillation fading is correlated to the attenuation caused by the rain. The two models were implemented in a software tool enabling generation of the propagation channel attenuation time series for the fixed and the mobile stratospheric communication systems.
机译：在毫米频段中操作的平流层通信系统受到雨和闪烁引起的大气损伤。在本文中，我们解决了这些大气损伤的传播信道建模。特别是，我们呈现雨水衰落和闪烁的渐进式通道模型，用于平流层通信。考虑到平流层通信系统的细节，根据改进的DLR段方法进行模拟的DLR段方法，即可变升高角度和不同的载波频率。通过调整卫星闪烁通道模型的闪烁导致的额外衰落，这可能是雨量的深度衰落，以调整卫星闪烁通道模型，以便闪烁衰落量与雨引起的衰减相关。这两个模型是在软件工具中实现的，使得能够产生固定和移动地段通信系统的传播信道衰减时间序列。

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