星际通信性能与未知现象系统分析

Selen Gecgel Cetin, Angeles Vazquez-Castro, Gunes Karabulut Kurt
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引用次数: 0

摘要

月球及其周围的半月空间有许多未知数、不确定性或部分绘制的现象,需要对其进行研究,以确定它们对半月通信的影响程度。这些现象包括温度波动、航天器距离和速度动态、表面粗糙度以及传播机制的多样性。为了开发稳健且具有动力操作性的半月空间网络(CSN),我们需要结合包容性模型来分析通信系统,这些模型应考虑到各种可能的传播环境和噪声特性。首先,我们分析了月球亮度温度与月球网关接收器等效噪声温度之间的关系,从而分析了通信链路。我们建议分析遍历容量和中断概率,因为它们是开发可靠通信的重要指标。特别是,我们用添加剂不对称阿尔法稳定分布来模拟噪声,从而可以对高斯和非高斯信号特征进行通用分析。然后,我们给出了遍历容量和中断概率的闭式边界。最后,结果显示了同轴星通信理论上和操作上可实现的性能边界。为了深入了解进一步的设计,我们还提供了综合系统设置的结果,其中包括任务目标以及轨道和系统动态。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Cislunar Communication Performance and System Analysis with Uncharted Phenomena
The Moon and its surrounding cislunar space have numerous unknowns, uncertainties, or partially charted phenomena that need to be investigated to determine the extent to which they affect cislunar communication. These include temperature fluctuations, spacecraft distance and velocity dynamics, surface roughness, and the diversity of propagation mechanisms. To develop robust and dynamically operative Cislunar space networks (CSNs), we need to analyze the communication system by incorporating inclusive models that account for the wide range of possible propagation environments and noise characteristics. In this paper, we consider that the communication signal can be subjected to both Gaussian and non-Gaussian noise, but also to different fading conditions. First, we analyze the communication link by showing the relationship between the brightness temperatures of the Moon and the equivalent noise temperature at the receiver of the Lunar Gateway. We propose to analyze the ergodic capacity and the outage probability, as they are essential metrics for the development of reliable communication. In particular, we model the noise with the additive symmetric alpha-stable distribution, which allows a generic analysis for Gaussian and non-Gaussian signal characteristics. Then, we present the closed-form bounds for the ergodic capacity and the outage probability. Finally, the results show the theoretically and operationally achievable performance bounds for the cislunar communication. To give insight into further designs, we also provide our results with comprehensive system settings that include mission objectives as well as orbital and system dynamics.
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