Vertical measurable displacement approach for altitude accuracy improvement in 3D visible light positioning

Xiaolong Hao, Wenjing Sun, Jian Chen, Changyuan Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review


Visible light positioning (VLP) techniques using light-emitting diodes (LEDs) are mostly based on the assumption that the height of the receiver is fixed and not intended to be measured. We evaluate the received signal strength (RSS)-based positioning with changed receiver altitude in both two-dimensional (2D) and three-dimensional (3D) situations, taking into account of non-line-of-sight (NLOS) channel with first reflection. Simulation results show that, the positioning accuracy deteriorates with the increase of the receiver altitude. To alleviate such problems and locate the target more accurately, we proposed a simple and convenient method by intentionally changing receiver altitude with direct measurable displacement. By employing the proposed approach, the resultant altitude error can be limited within ∼34 cm.

Original languageEnglish
Article number126914
JournalOptics Communications
Publication statusPublished - 1 Jul 2021


  • 3D positioning
  • NLOS
  • Receiver altitude
  • RSS
  • Visible light positioning

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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