Indoor Location Estimation Using Visible Light Communication and Image Sensors
Indoor Location Estimation Using Visible Light Communication and Image Sensors
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发表时间：
2013
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通讯作者：
Mohammad Shaifur Rahman;Ki-Doo Kim
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作者：
Mohammad Shaifur Rahman;Ki-Doo Kim
高功率白光 LED 预计将在不久的将来取代现有的照明技术，该技术也被建议用于可见光通信 (VLC)。我们提出了一种使用照明 LED、VLC 和图像传感器进行高精度室内定位的算法。在所提出的算法中，四个LED发送其三维坐标信息，这些信息被未知位置附近的两个图像传感器接收和解调。然后根据图像传感器上创建的 LED 图像的几何关系计算未知位置。我们详细描述了该算法。本文对所提出的算法进行了仿真并进行了介绍。该技术不需要任何角度测量，而现代使用 LED 和图像传感器的定位算法则需要这种角度测量。仿真结果表明，所提出的系统可以在几厘米的精度内估计未知位置。通过使用高分辨率图像传感器或增加图像传感器之间的间距可以提高定位精度。
High power white LEDs are expected to replace the existing lighting technologies in near future which are also suggested for visible light communication (VLC). We proposed an algorithm for high precision indoor positioning using lighting LEDs, VLC and image sensors. In the proposed algorithm, four LEDs transmitted their three-dimensional coordinate information which were received and demodulated by two image sensors near the unknown position. The unknown position was then calculated from the geometrical relations of the LED images created on the image sensors. We described the algorithm in details. Simulation of the proposed algorithm was done and presented in this paper. This technique did not require any angular measurement which was needed in contemporary positioning algorithms using LED and image sensor. Simulation results showed that the proposed system could estimate the unknown position within the accuracy of few centimeters. Positioning accuracy could be increased by using high resolution image sensors or by increasing the separation between the image sensors.