Results 71 to 80 of about 5,294 (265)

Sensor Hop-based Energy Efficient Networking Approach for Routing in Underwater Acoustic Communication

Journal of Telecommunications and Information Technology, 2017
Underwater Wireless Sensor Networks are deployed to explore the world under the water, measure different parameters and communicate the data to the surface, in the widespread applications.
Sheena Kohli
doaj   +1 more source

Pre-scheduling Pipelined Mode MAC Protocol for Underwater Acoustic Sensor Network [PDF]

Jisuanji gongcheng, 2017
Aiming at the delay problem of MACAW protocol in underwater acoustic sensor networks,on the basis of the traditional handshake protocol,this paper proposes a new Media Access Control(MAC) protocol for underwater acoustic sensor networks.The protocol uses
LIU Guangzhong,ZHU Xiangyu
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, Yong‐shuai Li, Jin‐hui Chen   +2 more
wiley   +1 more source

Implementation and Application of Bellhop Model in Underwater Acoustic Network Simulation

水下无人系统学报
With the development of underwater acoustic technology, underwater acoustic networks(UANs) have attracted much attention due to their performance in marine surveillance, disaster warning, and ocean security.
Qipei LIU, Kun LIU, Yihao LUO, Xinying WU, Heyu ZHOU   +4 more
doaj   +1 more source

Practical evaluation of differential frequency shift chirp modulation for acoustic underwater communication

, 2023
Frequency shift chirp modulation (FSCM) is a new modulation technique utilized by the LoRa physical layer. It is widely used in radio low-power wide area networks (LPWANs).
Renner, Bernd-Christian, Steinmetz, Fabian   +1 more
core  

Comprehensive DFT Analysis of FeSi and RhSi: Structural Stability, Electronic Contrast and Transport‐Optical Responses

Advanced Physics Research, EarlyView.
This comprehensive density functional theory analysis investigates the structural, electronic, optical, mechanical, and thermoelectric properties of FeSi, c‐RhSi, and o‐RhSi. Results reveal distinct electronic and optical contrasts among the materials.
Md Farhan Hassan, Shaher Azad, Md Salim Hossain, Suptajoy Barua, Md Kamruzzaman   +4 more
wiley   +1 more source

Experimental application of gliders communication system in South China Sea

Frontiers in Communications and Networks
Utilizing the motion characteristics of underwater gliders, a water acoustic communication system based on heterogeneous gliders was designed. The system consists of a surface wave glider and an acoustic underwater glider, which are respectively equipped
Shuyang Jia, Shuyang Jia, Shuyang Jia, Baoheng Liu, Baoheng Liu, Sichen Zou, Xiaochuan Zhang, Xiaochuan Zhang, Xiaochuan Zhang   +8 more
doaj   +1 more source

Environmental-friendly underwater acoustic communication and networks

, 2012
Intense harvesting of ocean resources extended exploitation activities to previously unexplored open ocean areas, to greater ocean depths and to remote polar regions. Such activities include, but are not limited to, energy, geology and fisheries.
Jesus, S. M.
core  

Design of Sliding Mode Autopilot with Steady-state Error Elimination for Autonomous Underwater Vehicles [PDF]

, 2006
Autonomous Underwater Vehicles (AUVs) have nonlinear and time-varying behaviour and unmodelled dynamics. This paper describes the design, development and evaluation of nonlinear sliding mode autopilot system for an AUV to control the speed, steering and ...
Shi, Juan, Juan Shi
core   +1 more source

Optimizing Strategies for Non‐Invasive Prospection of Settlements in the Intertidal Zone: A Case Study From the Centre of the Drowned Medieval Village of Tolsende (Scheldt Estuary, the Netherlands)

Archaeological Prospection, EarlyView.
ABSTRACT Medieval and early modern drowned villages in the intertidal zone of the Scheldt estuary (the Netherlands) constitute intriguing yet largely understudied components of north‐western Europe's underwater cultural heritage. Despite their high archaeological potential as time capsules of past settlement landscapes, research has remained limited ...
Jan Trachet, Sarah Bäumler, Stefan Krojer, Jeroen Verhegge, Wim De Clercq, Philippe De Smedt, Wouter H. Maes, Bente S. Majchczack, Immo Trinks, Dennis Wilken   +9 more
wiley   +1 more source