Results 131 to 140 of about 3,994 (304)

Rolling Shutter-Based Underwater Optical Camera Communication (UWOCC) with Side Glow Optical Fiber (SGOF)

Applied Sciences
Nowadays, a variety of underwater activities, such as underwater surveillance, marine monitoring, etc., are becoming crucial worldwide. Underwater sensors and autonomous underwater vehicles (AUVs) are widely adopted for underwater exploration. Underwater
Jia-Fu Li, Yun-Han Chang, Yung-Jie Chen, Chi-Wai Chow   +3 more
doaj   +1 more source

Underwater wireless optical communication system under reciprocal turbulence

, 2018
Underwater communication systems are in high demanded for subaquatic environment activities as the sea is an enormous and mostly unexplored place. The ten-meter long and few giga-bit per second range optical communication technique is feasible and has ...
Guo, Yujian
core   +1 more source

High Efficiency NIR Luminescence Beyond 900 nm Through Promoting Cr3+ Pair Generation in Sr3Zr2O7 Layered Perovskite

Laser &Photonics Reviews, EarlyView.
A Cr3+/La3+ codoped Sr3Zr2O7 NIR phosphor showing luminescence at ∼960 nm with high IQE/EQE (92.4%/57.5%) and good thermal stability was developed. La3+ stabilizes Cr3+ and induces Cr3+ pairs, enabling efficient blue‐to‐NIR conversion for underwater wireless optical communication.
Zhiyuan Pan, Sihan Feng, Yun Wang, Xuejiao Wang, Qi Zhu, Ji‐Guang Li   +5 more
wiley   +1 more source

Underwater Communication Through Magnetic Induction(MI)

, 2017
Wireless Underwater Communication Networks (WUCNs) have recently become a hot topic of research due to applications such as mine detection, navigation, and pollution monitoring.
Sana, Ramadan
core  

Enabling Under Ice Glider Operations: A Backseat Driver Approach

Journal of Field Robotics, EarlyView.
ABSTRACT Polar Oceans are key locations for forcing global ocean circulation, influencing both global climate and biogeochemical cycles. Due to restricted access to these seasonally and perennially ice‐covered regions, these areas are severely undersampled.
Yaomei Wang, Benjamin Allsup, Georgios Salavasidis, Stephen Woodward, Adeniyi Adenaya, Mike Smart, Alexis Johnson, Felipe Marques Dos Santos, Jake Ludgate, Daniel Matterson, Alvaro Lorenzo, J. Alexander Brearley, Alexander Brian Phillips   +12 more
wiley   +1 more source

Hybrid Terrestrial -Underwater Optical Communications Link

Diyala Journal of Engineering Sciences
This study presents the design and performance evaluation of a hybrid optical communication system capable of supporting high-rate data transmission across both terrestrial and underwater environments.
Satea Hikmat Alnajjar, Mohammed K. Al-obaidi, Mahmood J Ahmad, Baraa Munqith Albaker   +3 more
doaj   +1 more source

Massive GaN micro-LED array based underwater wireless optical communication

High-speed underwater wireless optical communication technology is a much-needed communication technology in current underwater applications, and micro-LED is a promising light source option. Considering the limitation of transmission distance due to the
Lv, Zhijian, Wu, Shuang, Zhang, Wenwei, LIU, Xinyi, Yue, C. Patrick, Liu, Zhaojun   +5 more
core   +1 more source

Virtual Elastic Tether: A New Approach for Multi‐Agent Navigation in Confined Aquatic Environments

Journal of Field Robotics, EarlyView.
ABSTRACT Underwater navigation is a challenging area in the field of mobile robotics due to inherent constraints in self‐localization and communication in underwater environments. Some of these challenges can be mitigated by using collaborative multi‐agent teams.
Kanzhong Yao, Xueliang Cheng, Keir Groves, Barry Lennox, Ognjen Marjanovic, Simon Watson   +5 more
wiley   +1 more source

Optical communication with underwater snake robots : Design and implementation of an underwater wireless optical communication system

, 2019
Eelume AS is a norwegian company that develops autonomous underwater vehicles. Their flagship model is an underwater snake robot that performs inspection, maintenance and repair operations. For the time being, Eelume has been using acoustic communications between their AUV's and the docking station, but it has a big drawback: bandwidth.
openaire   +1 more source

Redefining Optimal Coverage Path Planning for FLS‐Equipped AUVs With Deep Reinforcement Learning

Journal of Field Robotics, EarlyView.
ABSTRACT Autonomous Underwater Vehicles (AUVs) have emerged as indispensable tools for a variety of subsea tasks, from habitat monitoring and seabed mapping to infrastructure inspection and mine countermeasures. A fundamental challenge in this field is Coverage Path Planning (CPP), the problem of ensuring complete and efficient area coverage.
Lorenzo Cecchi, Alberto Topini, Alessandro Bucci, Alessandro Ridolfi   +3 more
wiley   +1 more source