Open AccessHigh accuracy indoor positioning scheme using single LED and camera
Author(s) -
Zheng Zhong,
Liu Lu,
Zhao Che,
Hu Weiwei
Publication year - 2018
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2017.3012
Subject(s) - photodiode , light emitting diode , position (finance) , computer science , angle of arrival , led lamp , optics , projection (relational algebra) , lens (geology) , optical wireless , indoor positioning system , artificial intelligence , computer vision , wireless , physics , telecommunications , accelerometer , algorithm , antenna (radio) , operating system , finance , economics
A high accuracy optical indoor positioning scheme is proposed and experimentally demonstrated, which only employs a single light‐emitting diode (LED) as the beacon and a camera as the receiver. The camera obtains the angle of arrival of the light using the projection model of the lens, and simultaneously works as photodiodes to measure the received light strength with properly controlled analogue gain and exposure time. The joint measured angle of arrival and received light strength are utilised as the fingerprint to determine the position of the receiver. The experimental results show that the proposed positioning scheme achieves a high precision where the 95th percentile accuracy is 1.97 cm.