• Journal of Applied Optics
  • Vol. 45, Issue 6, 1321 (2024)
Huiying ZHANG*, Meichun SHENG, Chengyu MA, Yueyue LI, and Shida LIANG
Author Affiliations
  • College of Information and Control Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China
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    DOI: 10.5768/JAO202445.0608002 Cite this Article
    Huiying ZHANG, Meichun SHENG, Chengyu MA, Yueyue LI, Shida LIANG. Indoor visible light positioning based on fusion of subregion BES-ELM and WDME weighted dual-mode[J]. Journal of Applied Optics, 2024, 45(6): 1321 Copy Citation Text show less

    Abstract

    Aiming at the problems of low indoor positioning accuracy and large boundary area positioning error, an indoor visible light positioning method based on the bald eagle search-extreme learning machine (BES-ELM) neural network and weighted dual-mode edge (WDME) positioning model was proposed. In this method, a visible light system structure with a single LED and five photodetectors was proposed, and the room was divided by fuzzy c-means clustering algorithm. The BES was used to optimize the ELM neural network, and the BES-ELM positioning model was established in different regions. Aiming at the boundary area, a weighted dual-mode edge (WDME) positioning model was constructed to achieve accurate edge location. Based on the indoor environment simulation of 3.2 m×3.2 m×3 m, the results show that using the BES-ELM algorithm to locate the center area, the average positioning error is 0.011 7 m, and the minimum positioning error is 0.001 9 m. Using the WDME positioning model to locate the edge area, the average positioning error is 0.013 3 m, which is 84%, 27%, and 26% higher than that of ELM, Elman and BES-ELM models, respectively. Therefore, the proposed visible light positioning method reduces the overall area positioning errors, especially improving the positioning accuracy of edge area.
    Huiying ZHANG, Meichun SHENG, Chengyu MA, Yueyue LI, Shida LIANG. Indoor visible light positioning based on fusion of subregion BES-ELM and WDME weighted dual-mode[J]. Journal of Applied Optics, 2024, 45(6): 1321
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