Results 31 to 40 of about 1,820,656 (215)
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
Underwater optical wireless communications : depth dependent variations in attenuation [PDF]
, 2013 Depth variations in the attenuation coefficient for light in the ocean were calculated using a one-parameter model based on the chlorophyll-a concentration Cc and experimentally-determined Gaussian chlorophyll-depth profiles.
Leeson, Mark S. +2 more
core +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
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
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
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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
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
Advanced Science, EarlyView.Recent advances in metasurface‐enabled low‐observable technologies are reviewed from the perspective of cross‐scale material–structure synergy. Electromagnetic, thermal, optical, and acoustic stealth are highlighted together with dynamic tuning, programmable coding, data‐driven inverse design, artificial intelligence, multispectral compatibility, and ...
Shuhao Wang +5 more
wiley +1 more source
Probe timing optimization for time-reversal underwater communications [PDF]
, 2011 Passive Time Reversal (pTR) is one of the variants of time reversal applicable to digital underwater communications. In passive time reversal a probe-signal is transmitted ahead of the data-signal in order to estimate the channel impulse response for ...
S. M. Jesus +6 more
core +1 more source
Safety Science and Technology, EarlyView.Consolidated FMEA–HAZOP safety management framework for WEC construction projects. ABSTRACT This study presents an advanced safety management framework for “Wave Energy Converter” (WEC) projects, addressing the inherent uncertainty, technological complexity, and environmental exposure of offshore renewable energy systems.
Panagiotis K. Marhavilas +4 more
wiley +1 more source