论文标题
一种新的接收信号强度辅助透视图 - 室内可见光定位的三分算法
A Novel Received Signal Strength Assisted Perspective-three-Point Algorithm for Indoor Visible Light Positioning
论文作者
论文摘要
在本文中，提出了接收的信号强度辅助透视图 - 三点定位算法（R-P3P）用于可见光定位（VLP）系统。 R-P3P的基本概念是关节视觉和强度信息，以使用3个LED估算接收器位置，而不论LED的方向如何。 R-P3P首先利用摄像机捕获的视觉信息来估计可见光的发射角。然后，R-P3P根据余弦定律和Wu-Ritt的零分解方法来计算LED和接收器之间的候选距离。基于入射角，候选距离和LED的物理特性，R-P3P可以选择与所有候选距离的确切距离。最后，采用线性最小平方（LLS）方法来估计接收器的位置。由于可见光信号的视觉和强度信息的组合，无论LED方向如何，R-P3P都可以使用3个LED实现高精度。仿真结果表明，R-P3P可以在70％的室内区域内实现10 cm内的定位精度，而无论LED方向如何，复杂性都低。
In this paper, a received signal strength assisted Perspective-three-Point positioning algorithm (R-P3P) is proposed for visible light positioning (VLP) systems. The basic idea of R-P3P is to joint visual and strength information to estimate the receiver position using 3 LEDs regardless of the LEDs' orientations. R-P3P first utilizes visual information captured by the camera to estimate the incidence angles of visible lights. Then, R-P3P calculates the candidate distances between the LEDs and the receiver based on the law of cosines and the Wu-Ritt's zero decomposition method. Based on the incidence angles, the candidate distances and the physical characteristics of the LEDs, R-P3P can select the exact distances from all the candidate distances. Finally, the linear least square (LLS) method is employed to estimate the position of the receiver. Due to the combination of visual and strength information of visible light signals, R-P3P can achieve high accuracy using 3 LEDs regardless of the LEDs' orientations. Simulation results show that R-P3P can achieve positioning accuracy within 10 cm over 70% indoor area with low complexity regardless of LEDs orientations.
