Results 91 to 100 of about 4,045,439 (255)

Convex optimization–based multi-user detection in underwater acoustic sensor networks

International Journal of Distributed Sensor Networks, 2018
Multi-carrier code-division multiple access is an important technical means for high-performance underwater acoustic sensor networks. Nevertheless, severe multiple access interference is a huge challenge.
Jianping Wang, Shujing Zhang, Wei Chen, Dechuan Kong, Zhou Yu   +4 more
doaj   +1 more source

A Study of Standardizing Frequencies Using Channel Raster for Underwater Wireless Acoustic Sensor Networks

, 2021
In this paper, we propose the method to standardize acoustic frequencies for underwater wireless acoustic sensor networks (UWASNs) by applying the channel raster used in the terrestrial mobile communications.
Changho Yun, Suhan Choi
core   +1 more source

Scaffold‐Free Living Cellular Structure With Omnidirectional Architectures

Advanced NanoBiomed Research, EarlyView.
Hydrogel lumen confinement enables the direct formation of mechanically stable, scaffold‐free cellular filaments under entirely aqueous, phototoxicity‐free conditions. These processable living building blocks support omnidirectional assembly into complex three‐dimensional architectures, providing a simple and versatile platform for scaffold‐free ...
Jing Ma, Shanshan Zhang, Xiaokang Deng, Cheng Qi, Haifeng Dong, Zhou Liu, Si Meng, Tiantian Kong   +7 more
wiley   +1 more source

Bearings-only acoustic source localization method using two distributed gliders and deep ocean experimental validation in the South China Sea [PDF]

JASA Express Letters
Passive acoustic localization using distributed mobile underwater sensor networks has emerged as an important research subject. This paper presents a bearings-only localization method for two distributed gliders equipped with conformal uniform circular ...
Zihao Zhou, Yang Shi, Yixin Yang, Jiancheng Yu, Zhiduo Tan, Chentian Xu, Shuxue Yan, Menglong Liu, Long Yang, Jie Sun   +9 more
doaj   +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

An adaptive network allocation vector timer-based carrier sense multiple access with collision avoidance medium access control protocol for underwater acoustic sensor networks

International Journal of Distributed Sensor Networks, 2017
Underwater sensor networks with acoustic communications are significantly challenged due to several unique characteristics, such as energy consumption, high propagation delay, and severely limited distance-dependent bandwidth.
Md Arifur Rahman, Youngdoo Lee, Insoo Koo   +2 more
doaj   +1 more source

Greedy Routing in Underwater Acoustic Sensor Networks: A Survey

International Journal of Distributed Sensor Networks, 2013
Due to the significant advances of wireless sensor networks (WSNs), researchers are eager to use this technology in the subsea applications. Because of rapid absorption of high radio frequency in the water, acoustic waves are used as communication medium, which pose new challenges, including high propagation delay, high path loss, low bandwidth, and ...
Mohammad Taghi Kheirabadi, Mohd Murtadha Mohamad   +1 more
openaire   +4 more sources

Technology Transfer to Underwater Archaeology: The LAHKE Project at the Submerged Neolithic Site of La Marmotta

Archaeological Prospection, EarlyView.
ABSTRACT This document is a report on the field application of non‐invasive geophysical and robotic prospecting methods at the submerged Neolithic site of La Marmotta (Lake Bracciano, Italy), within the LAHKE (LAke Heritage Knowledge and Exploration) project; the study focuses on the practical validation, adaptation and transfer of existing ...
dell' Erba Ramiro, Cupertino Giacomo, Cipollini Angelo, Luciano Blasi, Quattrucci Luca   +4 more
wiley   +1 more source

Opportunistic Routing Protocol for Underwater Optical Sensor Networks Based on Fuzzy Logic

水下无人系统学报
Underwater optical sensor networks offer significant advantages over traditional acoustic sensor networks, such as high bandwidth and low latency, making them a research hotspot to realize high-speed and real-time transmission of underwater data in sea ...
Rui SHEN, Jiqiang HAO, Dongmin FU, Ming YANG, Shuo HAN, Peng YUE, Cheng SUN   +6 more
doaj   +1 more source

A Study of Localization Metrics: Evaluation of Position Errors in Wireless Sensor Networks [PDF]

, 2011
For wireless sensor network applications that require location information for sensor nodes, locations of nodes can be estimated by a number of localization algorithms, which inevitably may introduce various types of errors in their estimations.
Aksoy, Demet, Korpeoglu, Ibrahim, Aksoy, D., Demet Aksoy, Korpeoglu, I., Hidayet Aksu, Ibrahim Korpeoglu, Aksu, Hidayet, Aksu, H.   +8 more
core   +1 more source