Tracking System for Fast Moving Nodes in Optical Mobile Communication and the Design Rules
Tracking System for Fast Moving Nodes in Optical Mobile Communication and the Design Rules
复制标题
光移动通信快速移动节点跟踪系统及设计规则
DOI：
10.1109/twc.2020.3044093
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发表时间：
2021-04
影响因子：
10.4
通讯作者：
Wang Haibo
中科院分区：
文献类型：
--
作者：
Zhang Kehan;Zhu Bingcheng;Zhang Zaichen;Wang Haibo
自由空间光通信以其安全、低成本、高速率等优点在很多场景得到应用。在这种情况下，需要跟踪系统来确保可接受的信号功率。自由空间光链路被认为无法支持光移动通信中快速移动的节点，例如无人机、汽车或行人，因为现有的跟踪方案无法准确、快速地跟踪节点。在本文中，我们提出了一种利用多个信标激光器的新型跟踪系统。测量每个信标激光器的功率以估计目标的方向。与基于连续测量和反馈多次驱动伺服电机的现有方案不同，我们的方案可以基于单次测量直接估计伺服电机的下一个最佳目标偏移，从而使跟踪系统能够更快地收敛。推导了理想跟踪光移动通信系统的封闭式中断概率表达式，其中考虑了指向误差和移动统计。为了保持足够的平均功率并降低中断概率，建议的主激光器光束发散度以闭合形式表示为目标随机位移统计数据的函数，为系统设计提供了见解。
Free space optical communication has been applied in many scenarios because of its security, low cost and high rates. In such scenarios, a tracking system is necessary to ensure an acceptable signal power. Free space optical links were considered unable to support fast moving nodes, such as unmanned aerial vehicles, cars or pedestrians, in optical mobile communication because existing tracking schemes fail to track the nodes accurately and rapidly. In this paper, we propose a novel tracking system exploiting multiple beacon lasers. Each beacon laser’s power is measured to estimate the orientation of the target. Unlike existing schemes which drive servo motors multiple times based on consecutive measurements and feedback, our scheme can directly estimate the next optimal targeting shift for the servo motors based on a single measurement, allowing the tracking system to converge much faster. Closed-form outage probability expression is derived for the optical mobile communication system with ideal tracking, where pointing error and moving statistics are considered. To maintain sufficient average power and reduce the outage probability, the recommended beam divergence of the main laser is expressed in closed form as a function of the target’s statistics of random shift, providing insights to the system design.
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DOI：
10.1117/12.763875
发表时间：
2008-02
期刊：
--
影响因子：
--
作者：
Mouhammad K. Al-Akkoumi;H. Refai;J. Sluss
通讯作者：
Mouhammad K. Al-Akkoumi;H. Refai;J. Sluss
光移动通信：原理、实现和性能分析
影响因子：
6.8
作者：
Zhang Zaichen;Dang Jian;Wu Liang;Wang Haibo;Xia Jun;Lei Wei;Wang Jiangzhou;You Xiaohu
通讯作者：
You Xiaohu
DOI：
10.1109/icton.2015.7193303
发表时间：
2015-07
期刊：
2015 17th International Conference on Transparent Optical Networks (ICTON)
影响因子：
--
作者：
M. B. Awan;S. Mohan
通讯作者：
M. B. Awan;S. Mohan
DOI：
10.4304/jcm.4.8.582-587
发表时间：
2008-07
期刊：
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing
影响因子：
--
作者：
M. Toyoshima;N. Miyashita;Y. Takayama;H. Kunimori;S. Kimura
通讯作者：
M. Toyoshima;N. Miyashita;Y. Takayama;H. Kunimori;S. Kimura
DOI：
--
发表时间：
2001-02
期刊：
--
影响因子：
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作者：
S. Kasap
通讯作者：
S. Kasap