5 August 2015 VLC indoor positioning system based on iterative algorithm
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Indoor Visible Light Communication (VLC) positioning is an new indoor positioning method. We discuss the method to realize 3D positioning and the how to optimize it. Build a simplified 3D fingerprint database in the condition of linear light intensity attenuation model and use it for 3D positioning. Furthermore we combined fingerprint database method with the iterative algorithm of Lambert distribution to calculate Z coordinates in order to improve the accuracy. Simulations shows that, in the subspace of 1m*1m*1m, the measurement error of fingerprint database method in X-Y plane is 4.1cm, while z direction measurement error is 5.4cm. By contrast, measurement error of 3D positioning method based on iterative algorithm reduces by 10%.
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Duobo Wu, Duobo Wu, Lihui Feng, Lihui Feng, Aiying Yang, Aiying Yang, } "VLC indoor positioning system based on iterative algorithm", Proc. SPIE 9619, 2015 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing, 96190E (5 August 2015); doi: 10.1117/12.2193457; https://doi.org/10.1117/12.2193457

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