Results 51 to 60 of about 4,483,702 (282)

A Two-LED Based Indoor Three-Dimensional Visible Light Positioning and Orienteering Scheme for a Tilted Receiver

open access: yesPhotonics, 2022
Conventional visible light positioning (VLP) systems usually require at least three light-emitting diodes (LEDs) to enable trilateration or triangulation, which is infeasible when the LED condition is constrained. In this paper, we propose a novel indoor
Xiaodi You   +3 more
doaj   +1 more source

A visible light-based system for automotive relative positioning [PDF]

open access: yes2017 IEEE SENSORS, 2017
This paper details a simple relative positioning system based on phase-shift measurement with the vehicles lightemitting diode headlamps and taillights. A simulation study of this system is carried out in a realistic environment. It shows that the longitudinal measurement resolution is 12.4 cm over 18 m whereas the lateral distance can be estimated ...
Béchadergue, Bastien   +2 more
openaire   +3 more sources

Multi-node cooperation based robust visible light intelligent positioning

open access: yesDianxin kexue, 2023
Visible light communication is expected to be one of the key alternative technologies for 6G with the advantages of abundant spectrum resources, less susceptibility to electromagnetic pollution and green safety, which also provides a new idea for high ...
Sicong LIU   +3 more
doaj   +2 more sources

Research on the Collinear Equation Model of Visual Positioning Based on Visible Light Communication

open access: yesMATEC Web of Conferences, 2015
A positioning method based on visible light communication is proposed, which receiving visible light information by low-resolution photodiode array and receiving visual information by the front camera of mobile phone.
Wang Yuqi, Gong Yingkui, Shi Zhengfa
doaj   +1 more source

Visible-Light-Driven BiOI-Based Janus Micromotor in Pure Water

open access: yes, 2017
Light-driven synthetic micro-/nanomotors have attracted considerable attention due to their potential applications and unique performances such as remote motion control and adjustable velocity.
Yefei Wu (3701548)   +6 more
core   +1 more source

Inertial Sensor-Assisted High-Coverage Visible Light Positioning Algorithm

open access: yesIEEE Photonics Journal
Existing visible light positioning (VLP) algorithms typically require multiple LEDs to achieve high-precision positioning. However, in practice, the number of available LEDs is influenced by various factors such as the layout of LEDs and the field-of ...
Fugui He   +6 more
doaj   +1 more source

Multilateration Approach for Wide Range Visible Light Indoor Positioning System Using Mobile CMOS Image Sensor

open access: yesApplied Sciences, 2021
Visible light positioning (VLP) is a cost-effective solution to the increasing demand for real-time indoor positioning. However, owing to high computational costs and complicated image processing procedures, most of the existing VLP systems fail to ...
Md Habibur Rahman   +2 more
doaj   +1 more source

Visible-Light-Induced Photocatalyst-Free Radical Trifluoromethylation

open access: yes, 2022
An attractive, versatile, and operationally simple, visible-light-induced, transition-metal-free, photocatalyst-free, and oxidant-free trifluoromethylation has been demonstrated.
Xin Liang (442470)   +7 more
core   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

open access: yesFEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure   +3 more
wiley   +1 more source

LEDPOS: Indoor Visible Light Positioning Based on LED as Sensor and Machine Learning

open access: yesIEEE Access
Accurate indoor positioning is becoming increasingly important, especially in highly automated industrial environments with robots. In addition, LED-based lighting is also being used more and more frequently in such application fields.
Christian Fragner   +3 more
doaj   +1 more source

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