Huang Tianming, Lin Bangjiang, Ghassemlooy Zabih, Jiang Ningcong, Lai Qiwei
Opt Express. 2022 Sep 26;30(20):35431-35443. doi: 10.1364/OE.470391.
In this paper, we propose a non-line of sight (NLOS) visible light positioning (VLP) system using a binocular camera and a single light emitting diode (LED) for the realization of 3D positioning of an arbitrary posture. The proposed system overcomes the challenges of the shadowing/blocking of the line of sight (LOS) transmission paths between transmitters and receivers (Rxs) and the need for a sufficient number of LEDs that can be captured within the limited field of view of the camera-based Rx. We have developed an experimental testbed to evaluate the performance of the proposed system with results showing that the lowest average error and the root mean square error (RMSE) are 26.10 and 31.02 cm following an error compensation algorithm. In addition, a label-based enhanced VLP scheme is proposed for the first time, which has a great improvement on the system performance with the average error and RMSE values of 7.31 and 7.74 cm and a 90 percentile accuracies of < 11 cm.
在本文中，我们提出了一种使用双目相机和单个发光二极管（LED）的非视距（NLOS）可见光定位（VLP）系统，以实现任意姿态的三维定位。所提出的系统克服了发射器与接收器（Rx）之间视距（LOS）传输路径的阴影/遮挡挑战，以及在基于相机的Rx有限视野内需要捕获足够数量LED的问题。我们开发了一个实验测试平台来评估所提出系统的性能，结果表明，经过误差补偿算法后，最低平均误差和均方根误差（RMSE）分别为26.10厘米和31.02厘米。此外，首次提出了一种基于标签的增强VLP方案，该方案对系统性能有很大改进，平均误差和RMSE值分别为7.31厘米和7.74厘米，90%百分位数精度<11厘米。
