Results 1 to 10 of about 4,678,799 (245)

A Low-Cost Visible Light Positioning System for Indoor Positioning [PDF]

Sensors, 2020
Currently, a high percentage of the world’s population lives in urban areas, and this proportion will increase in the coming decades. In this context, indoor positioning systems (IPSs) have been a topic of great interest for researchers.
Juan Carlos Torres, Aitor Montes, Sandra L. Mendoza, Pedro R. Fernández, Juan S. Betancourt, Lorena Escandell, Carlos I. del Valle, José Manuel Sánchez-Pena   +7 more
doaj   +6 more sources

A Comprehensive Study on Light Signals of Opportunity for Subdecimetre Unmodulated Visible Light Positioning [PDF]

Sensors, 2020
Currently, visible light positioning (VLP) enabling an illumination infrastructure requires a costly retrofit. Intensity modulation systems not only necessitate changes to the internal LED driving module, but decrease the LEDs’ radiant flux as well. This
Sander Bastiaens, Kenneth Deprez, Luc Martens, Wout Joseph, David Plets   +4 more
doaj   +2 more sources

Automating the Calibration of Visible Light Positioning Systems [PDF]

Sensors, 2022
Visible light positioning is one of the most popular technologies used for indoor positioning research. Like many other technologies, a calibration procedure is required before the system can be used.
Robin Amsters, Simone Ruberto, Eric Demeester, Nobby Stevens, Peter Slaets   +4 more
doaj   +2 more sources

Demonstration of Three-Dimensional Indoor Visible Light Positioning with Multiple Photodiodes and Reinforcement Learning [PDF]

Sensors, 2020
To provide high-quality location-based services in the era of the Internet of Things, visible light positioning (VLP) is considered a promising technology for indoor positioning.
Zhuo Zhang, Huayang Chen, Weikang Zeng, Xinlong Cao, Xuezhi Hong, Jiajia Chen   +5 more
doaj   +2 more sources

Indoor Real-Time 3-D Visible Light Positioning System Using Fingerprinting and Extreme Learning Machine

IEEE Access, 2020
Photodiode-based (PD-based) visible light positioning (VLP) has become a research focus of indoor positioning technology, while the existing VLP models rarely consider the anti-interference and positioning time of that.
Yirong Chen, Weipeng Guan, Jingyi Li, Hongzhan Song   +3 more
doaj   +3 more sources

Angle-of-Arrival (AOA) Visible Light Positioning (VLP) System Using Solar Cells With Third-Order Regression and Ridge Regression Algorithms

IEEE Photonics Journal, 2020
We put forward and demonstrate a angle-of-arrival (AOA) based visible-light-positioning (VLP) system using quadrant-solar-cell (QSC) and third-order ridge regression machine learning (RRML) to improve the positioning accuracy.
Chong-You Hong, Yu-Chun Wu, Yang Liu, Chi-Wai Chow, Chien-Hung Yeh, Ke-Ling Hsu, Dong-Chang Lin, Xin-Lan Liao, Kun-Hsien Lin, Yi-Yuan Chen   +9 more
doaj   +3 more sources

Image Sensor-Based Three-Dimensional Visible Light Positioning for Various Environments [PDF]

Sensors
Research on image sensor (IS)-based visible light positioning systems has attracted widespread attention. However, when the receiver is tilted or under a single LED, the positioning system can only achieve two-dimensional (2D) positioning and requires ...
Xiangyu Liu, Junqi Zhang, Song Song, Lei Guo   +3 more
doaj   +2 more sources

Total-reflection-based microscope compatible with X-ray and visible light for sample positioning [PDF]

Journal of Synchrotron Radiation
Sample positioning in X-ray imaging is often technically demanding and involves radiation exposure to the sample. For easier and damage-free positioning, the integration of a visible-light microscope is an effective and widely adopted approach.
Kyota Yoshinaga, Jordan Tyler O'Neal, Kai Sakurai, Satoru Egawa, Noboru Furuya, Takenori Shimamura, Yoko Takeo, Yu Nakata, Yuichi Nagayama, Hikaru Kishimoto, Yasunori Senba, Mari Shimura, Taketoshi Kodama, Makina Yabashi, Haruhiko Ohashi, Takashi Kimura   +15 more
doaj   +2 more sources

An efficient three-dimensional indoor visible light positioning algorithm using multiple transmitters and single receiver

Results in Optics, 2021
Indoor visible light positioning system has received much attention in recent years due to the simultaneous operation of optical wireless communication and object tracking.
Ummea Afroza, Pallab K. Choudhury
doaj   +1 more source

Multi-User Visible Light Communication and Positioning System Based on Dual-Domain Multiplexing Scheme

Photonics, 2023
Visible light communication and positioning (VLCP) is a promising candidate for constructing a multi-functional wireless network with large-scale connectivity and centimeter-level positioning.
Zhongxu Liu, Changyuan Yu
doaj   +1 more source