相关实验视频
Updated: Jun 7, 2025
09:36
Characterization of Anisotropic Leaky Mode Modulators for Holovideo
Published on: March 19, 2016
7.9K
概括
本研究介绍了一种使用LoRa调制的新型非视线 (NLOS) 可见光定位和通信系统. 它即使在阻塞路径的情况下也能实现准确的室内定位,克服了传统可见光定位的局限性.
科学领域:
- 电气工程 电气工程
- 计算机科学 计算机科学
- 光学通信是指光学通信.
背景情况:
- 室内基于位置的服务对物联网增长至关重要.
- 可见光定位 (VLP) 提供了准确性和成本效益,但与阻塞路径作斗争.
- 传统的VLP需要视线,限制其在复杂的室内环境中的使用.
研究的目的:
- 开发一个非视线 (NLOS) 可见光定位和通信系统.
- 在室内VLP中使用LoRa调制来克服链路障碍.
- 为了在具有挑战性的照明条件下实现可靠的室内定位和通信.
主要方法:
- 提出了一个NLOS VLP系统,集成LoRa调制来恢复信号.
- 建立了LED和虚拟光探测器 (PD) 图像之间的几何关系.
- 根据NLOS通道模型推导了接收信号强度,并应用了定位的三边化.
主要成果:
- 该系统在NLOS链路上展示了可靠的通信和定位.
- 在60厘米的PD高度下,在25厘米以下实现了90百分点的定位精度.
- 在80厘米的PD高度下,在35厘米以下实现了90百分点的定位精度.
结论:
- 拟议的NLOS-VLP系统使用LoRa调制有效地解决了链路阻塞问题.
- 这种方法提高了复杂的室内环境中VLP的实用性.
- 该系统为准确的室内定位和通信提供了可行的解决方案.
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