在空间-地面集成光学网络 (SGIONs) 中自由空间光学 (FSO) 料链路的规划:权衡吞吐量和动态
Optics express
|October 20, 2023
概括
这项研究通过管理自由空间光学 (FSO) 料链接交付和容量来优化空间-地面集成光学网络 (SGION). 拟议的NSGA-FLHCA算法有效平衡网络吞吐量和动态,以改善卫星通信.
科学领域:
- 卫星通信 卫星通信
- 光学网络是指光学网络.
- 无线通信是一种无线通信.
背景情况:
- 自由空间光学 (FSO) 输送链路为卫星到地面的回程提供了无线电频率 (RF) 的替代方案,形成了空间-地面集成光学网络 (SGION).
- 在低轨道卫星通过期间的大气流会导致闪,影响FSO链路性能,特别是在低海拔.
- 优化光学地面站 (OGS) 观测范围提高了容量,但增加了网络动态,降低了卫星可见性.
研究的目的:
- 解决SGION吞吐量和网络动态之间的权衡问题.
- 为FSO料链接交付和容量调整提出一个新的方案.
- 提高综合空间-地面光学网络的整体性能.
主要方法:
- 开发两个基线方案进行比较.
- 基于非主导分类遗传算法 (NSGA-FLHCA) 的料链交付和容量调整方案的建议.
- 使用多目标优化来找到性能平衡的帕雷托边缘.
主要成果:
- 与基线方法相比,NSGA-FLHCA方案显示出更高的性能.
- 在网络吞吐量方面取得了显著的改善.
- 观察到网络动态的减少,增强了稳定性.
结论:
- NSGA-FLHCA算法为优化 SGION 性能提供了有效的解决方案.
- 平衡吞吐量和动态对于高效的卫星通信至关重要.
- 这种方法提高了综合空间-地面光学网络的可靠性和容量.
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