Results 31 to 40 of about 3,620 (223)
Underwater acoustic multiplexing communication by pentamode metasurface [PDF]
Journal of Physics D: Applied Physics, 2021 Abstract As the dominant information carrier in water, the acoustic wave is widely used for underwater detection, communication and imaging. Even though underwater acoustic communication has been greatly improved in the past decades, it still suffers from slow transmission speeds and low information capacity.
Zhaoyong Sun +6 more
openaire +2 more sources
IEEE Access, 2019 Military forces of every country are trying their best to protect their motherland from the attackers. With advancement in marine technology, it has become critical to detect and track the target by obtaining active measurements before it is close enough
Huma Ghafoor, Youngtae Noh
doaj +1 more source
Time Diversity Passive Time Reversal for Underwater Acoustic Communications
IEEE Access, 2019 Underwater acoustic signal propagation is greatly affected by source-receiver motion, surface variations, and water column variabilities, which make the underwater acoustic communications very challenging.
Salman I. Siddiqui, Hefeng Dong
doaj +1 more source
The Spirit of Society Journal: International Journal of Society Development and Engagement, 2022 Underwater wireless communications are growing very fast along with human needs for applications such as defense, state security, underwater control and monitoring systems.
Yuning Widiarti, Mohammad Basuki Rahmat
doaj +1 more source
DronesUnderwater drones such as autonomous underwater vehicles (AUVs) and remotely operated vehicles (ROVs) are revolutionizing underwater operations and are essential for advanced marine applications like environmental monitoring, deep-sea exploration, and ...
Sarun Duangsuwan, Katanyoo Klubsuwan
doaj +1 more source
Underwater Wireless Communications for Cooperative Robotics with UWSim-NET
Applied Sciences, 2019 The increasing number of autonomous underwater vehicles (AUVs) cooperating in underwater operations has motivated the use of wireless communications. Their modeling can minimize the impact of their limited performance in real-time robotic interventions ...
Diego Centelles +4 more
doaj +1 more source
Model-Driven Deep-Learning-Based Underwater Acoustic OTFS Channel Estimation
Journal of Marine Science and Engineering, 2023 Accurate channel estimation is the fundamental requirement for recovering underwater acoustic orthogonal time–frequency space (OTFS) modulation signals.
Yuzhi Zhang +4 more
doaj +1 more source
Guiding and Manipulating Light Fields in Microstructured Liquid Crystals
Advanced Physics Research, EarlyView.This review summarizes recent advances in guided‐wave optics enabled by microstructured liquid crystal (LC) devices, covering their fundamental material properties, key degree of freedom for dynamic light field manipulations. The advances of linear guided‐wave optics, nonlinear‐optics with spatial optical solitons, and microlasers in LC‐based devices ...
Shan‐shan Chang +2 more
wiley +1 more source
Medium access control, error control and routing in underwater acoustic networks: a discussion on protocol design and implementation [PDF]
, 2013 The journey of underwater communication which began from Leonardo’s era took four and a half centuries to find practical applications for military purposes during World War II.
Azad, Md. Saiful
core
FlexMat, EarlyView.Abstract Soft robots, engineered from highly compliant materials, offer superior adaptability and safety in unstructured environments compared to their rigid counterparts. Recent advancements, fueled by bio‐inspiration and material programmability, have led to the rapid co‐evolution of their core modules: actuation, sensing, protection, energy, and ...
Qiulei Liu +3 more
wiley +1 more source