Visible Light Positioning Using a Single LED and a Single Rotatable Photodetector

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-06-12 DOI:10.1109/LPT.2025.3578979

Hanyang Shi;Caiyi Wang;Yan Zhao

引用次数: 0

Abstract

We investigate an indoor VLP system consisting of a single LED and a single rotatable photodetector (PD) based on the received signal strength (Liu et al., 2022). Based on the VLP system, we propose a least-square (LS) positioning algorithm. In order to analyse the influence of rod length and each rotation angle on the positioning accuracy, the Cramér-Rao lower bound (CRLB) on the positioning error of the VLP system is derived. We take advantage of the derived CRLB to choose the appropriate rod length and each rotation angle. In our VLP system, we only need to rotate the PD 4 times to achieve centimeter-level positioning accuracy. Simulation and practical experiment results show that in terms of positioning accuracy and receiver rotation times, our VLP system is significantly superior to the VLP system (Liu et al., 2022). Moreover, there is no positioning blind spots in our VLP system.

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使用单个LED和单个可旋转光电探测器进行可见光定位

我们研究了一个基于接收信号强度的室内VLP系统，该系统由单个LED和单个可旋转光电探测器（PD）组成（Liu et al., 2022）。基于VLP系统，提出了一种最小二乘（LS）定位算法。为了分析杆长和各旋转角度对定位精度的影响，推导了VLP系统定位误差的cram - rao下限（CRLB）。我们利用衍生的CRLB来选择合适的杆长和每个旋转角度。在我们的VLP系统中，我们只需要旋转PD 4次就可以达到厘米级的定位精度。仿真和实际实验结果表明，在定位精度和接收机旋转次数方面，我们的VLP系统明显优于VLP系统（Liu et al., 2022）。此外，我们的VLP系统不存在定位盲点。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.