Results 51 to 60 of about 756 (164)

Angular Diversity Based Visible Light Positioning [PDF]

, 2014
Visible Light Positioning (VLP) uses modulated LED luminaries to help locate a receiver inside a building. Indoor positioning is becoming an increasingly important service, and visible light has many advantages over other technologies used in indoor ...
Taylor, Michael Thomas
core  

Vehicular Visible Light Positioning Using Receiver Diversity with Machine Learning [PDF]

, 2021
This paper proposes a 2-D vehicular visible light positioning (VLP) system using existing streetlights and diversity receivers. Due to the linear arrangement of streetlights, traditional positioning techniques based on triangulation or similar algorithms
Olivier C. L. Haas, Rajbhandari, S, Uche Onyekpe, Almadani, Yousef, Onyekpe, U, Ijaz, M, Ahmad, Zahir, Haas, Olivier C. L., Almadani, Y, Sujan Rajbhandari, Onyekpe, Uche, Ijaz, Muhammad, Haas, OCL, Yousef Almadani, Mahmoud, AA, Ahmad, Z, Abdulrahman A. Mahmoud, Mahmoud, Abdulrahman A., Haas, Olivier; id_orcid, Ijaz, M., Muhammad Ijaz, Onyekpe, Uche Abiola, Zahir Ahmad, Rajbhandari, Sujan, Mahmoud, Abdulrahman   +24 more
core   +1 more source

Experimental demonstration of an indoor visible light positioning system using RGB LEDs for multi‐cell networks

The Journal of Engineering
A visible light positioning (VLP) system for multi‐cell networks based on multi‐colour LED that combines frequency division multiplexing with the received signal strength and a trilateration method is proposed. First, it employs experimental measurements
R. A. Martinez‐Ciro, F. E. Lopez‐Giraldo, J. M. Luna‐Rivera, A. M. Ramirez‐Aguilera   +3 more
doaj   +1 more source

Fluid‐induced slip on a rate‐and‐state fault during co‐ and post‐injection: The interplay of fluid pressure diffusion and poroelastic stress

Deep Underground Science and Engineering, EarlyView.
Fault slip can occur ahead of the injection pressure front due to poroelastic stress. Our model captures the interaction of pressure, stress, and friction, providing new insights into injection‐induced seismicity and post‐injection fault slip. Shut‐in operations can either mitigate or accelerate seismic events depending on fault conditions and ...
Qifeng Xie, Lei Wang, Qi Li
wiley   +1 more source

Deep Reinforcement Learning Based Autonomous Decision‐Making for Cooperative Uncrewed Aerial Vehicles: A Search and Rescue Real World Application

Journal of Field Robotics, EarlyView.
ABSTRACT This paper presents the first end‐to‐end framework that combines guidance, navigation, and centralized task allocation for multiple UAVs performing autonomous search‐and‐rescue (SAR) in GNSS‐denied indoor environments. A twin delayed deep deterministic policy gradient controller is trained with an artificial potential field (APF) reward that ...
Thomas Hickling, Maxwell Hogan, Abdulla Tammam, Nabil Aouf   +3 more
wiley   +1 more source

Camera localization under visible light positioning [PDF]

, 2023
Camera localization is a crucial task in computer vision applications, including autonomous navigation, augmented reality, and robotics. It enables devices such as smartphones to determine their location and orientation in an environment. In recent years,
Sawal, Erra Syamira
core  

Visible light positioning : a machine learning approach [PDF]

, 2022
Visible light positioning (VLP) systems have experienced substantial revolutionary progress over the past year because they can offer great positioning accuracy without needing any additional infrastructure, as conventional radio-frequency (RF)-based ...
Rekkas, Vasileios P., Plets, David, Joseph, Wout, Goudos, Sotirios K., Sotiroudis, Sotirios   +4 more
core   +1 more source

Inertial Sensor-Assisted High-Coverage Visible Light Positioning Algorithm

IEEE 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, Chengyang Li, Chensitian Zhang, Yao Nie, Huan Wu, Xianglin Fan, Yang Yang   +6 more
doaj   +1 more source

Ground‐based robotic remote sensing for standardized biodiversity monitoring in coastal habitats

Remote Sensing in Ecology and Conservation, EarlyView.
Illustrated workflow of the proposed citizen‐to‐robot monitoring pipeline: (i) expert‐validated citizen observations are translated into AI models, (ii) deployed on a ground‐based robotic platform for proximal sensing of coastal dune habitats, (iii) enabling standardized detection of ecological targets (e.g., Pancratium maritimum & Brithys crini), and (
Giovanni Di Lorenzo, Simonetta Bagella, Micaela del Valle Rasino, Maria Laura Carranza, Manolo Garabini, Franco Angelini   +5 more
wiley   +1 more source

A Comparison of Mobile Laser Scanning Data Acquisition Methods in Closed Forest, Open Woodland and Sub‐Alpine Woodland Ecosystems

Remote Sensing in Ecology and Conservation, EarlyView.
This study demonstrates that the mobile laser scanning (MLS) sampling density required to reliably characterise vegetation structure increases with a site's structural complexity. Applying a five‐level acquisition framework across open woodland, closed forest and sub‐alpine woodland ecosystems, we found that longer scanning paths increased the ...
Johann Tiede, Karin Reinke, Trung H. Nguyen, Simon Jones   +3 more
wiley   +1 more source