在大气天气预报条件下,FSO数学建模和优化基础轨道以训练通信
Ahmed Alzahmi1, M F L Abdullah2, Mohammed A Alhartomi3
1Department of Electrical Engineering, University of Tabuk, 71491, Tabuk, Saudi Arabia.
Scientific reports
|May 3, 2025
概括
自由空间光学 (FSO) 为基地到列车通信提供了高带宽解决方案,克服了无线电频率的限制. 多个发射器显著提高FSO链路性能和高铁的覆盖范围.
科学领域:
- 光学通信是指光学通信.
- 无线技术 无线技术
- 运输工程 运输工程
背景情况:
- 高铁的快速增长需要先进的宽带解决方案,超出目前的无线电频率 (RF) 能力.
- 现有的射频技术面临带宽限制,以满足日益增长的通勤需求.
- 自由空间光学 (FSO) 为高容量无线通信提供了一个有希望的替代方案.
研究的目的:
- 通过使用FSO.数学建模和制定一条双曲线轨道底部到列车 (B2T) 通信链路.
- 建议和评估多个发射机配置,以最大限度地提高FSO链路覆盖范围和性能.
- 评估各种天气条件对B2T-FSO链路可靠性的影响.
主要方法:
- 双曲线轨道B2T-FSO连接模型的数学导出和制定.
- 实现多个发射器 (Tx) 和单个接收器 (Rx) 配置 (例如,4Tx/1Rx,3Tx/1Rx).
- 评估链路性能指标,包括接收功率,信号噪声比 (SNR),比特错误率 (BER) 和眼睛图.
主要成果:
- 实现的最大覆盖长度为:618m (4Tx/1Rx),505m (3Tx/1Rx),365m (2Tx/1Rx) 和240m (1Tx/1Rx).
- 在不同配置中,B2T-FSO链路性能显著改善.
- 分析证实了B2T-FSO连接的可行性,即使在恶劣的天气条件下.
结论:
- 拟议的多发射器FSO系统有效地提高了在曲线轨道上基础到列车通信的覆盖范围和性能.
- FSO技术是满足高速铁路日益增长的宽带需求的可行解决方案.
- 尽管面临与天气有关的挑战,但B2T-FSO链接显示出了弹性和可实施性.
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