Results 71 to 80 of about 3,711 (217)
Ultrawideband Underwater Acoustic Communication Channels
IEEE Journal of Oceanic Engineering, 2013 Traditional channel models for communications research are designed for narrowband systems. Underwater acoustic communication systems use a bandwidth that is not small compared with the center frequency of the signal and qualify as ultrawideband (UWB) in a relative sense.
Paul A. van Walree, Roald Otnes
openaire +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 +5 more
wiley +1 more source
Engineered Gravel Trench Hyporheic Exchange to Create Cold‐Water Thermal Refuges
River Research and Applications, EarlyView.ABSTRACT Warming rivers are driving a loss or fragmentation of cold‐water habitat and providing the impetus to develop proactive thermal management approaches to maintain suitable habitat in rivers. One innovative approach is through the creation of cold‐water thermal refuges during periods of thermal stress for aquatic species.
Kathryn A. Smith +3 more
wiley +1 more source
IEEE Access, 2019 Orthogonal frequency division multiplexing (OFDM) provides an effective approach to combat multipath with high bandwidth efficiency for underwater acoustic communication, thus design and implementation of acoustic OFDM MODEMs draw more and more attention.
Yuehai Zhou, Feng Tong
doaj +1 more source
Remote Sensing in Ecology and Conservation, EarlyView.Targeted conservation measures are contingent on robust knowledge of spatio‐temporal animal distribution in areas of interest. We explore unmanned aerial vehicle (UAV) transect monitoring as a novel method for standardized digital aerial surveys of marine megafauna by investigating the fine‐resolution spatio‐temporal distribution of harbour porpoises ...
Dinah Hartmann +2 more
wiley +1 more source
Rhyming in the cold: first evidence of soniferous fishes in the Southern Ocean
Remote Sensing in Ecology and Conservation, EarlyView.The acoustic ecology of Southern Ocean fishes remains unknown due to a lack of dedicated acoustic research on the fishes of this ocean. Passive acoustic monitoring data were collected at the South African sub‐Antarctic Prince Edward Islands using an underwater acoustic recorder, and towed underwater Ski‐Monkey cameras were deployed to identify fish ...
Fannie W. Shabangu +5 more
wiley +1 more source
Prefix-Free Frequency Domain Equalization for Underwater Acoustic Single Carrier Transmissions
IEEE Access, 2018 Prefixes, in forms of cyclic-prefixes or zero-padding, have often been viewed as indispensable in underwater acoustic single-carrier transmissions to avoid inter-block interference (IBI) and to formulate circular convolution.
Xingbin Tu, Aijun Song, Xiaomei Xu
doaj +1 more source
Wake-Up Receiver for Underwater Acoustic Communication Using in Shallow Water. [PDF]
Sensors (Basel), 2023 Schmidt JH, Schmidt AM.
europepmc +1 more source
Types of Struggles in Disrupted Interaction: A Case of Hard‐of‐Hearing Employees
Symbolic Interaction, EarlyView.Everyone experiences disrupted interactions in their everyday life. However, research indicates that people with functional impairments are particularly exposed to patterns of interactional inequality at work. Despite this, little is known about the specific disrupted interactions in everyday life and the various types of interactional struggles this ...
Ida Friis Thing
wiley +1 more source
Coarse-to-Fine Localization of Underwater Acoustic Communication Receivers. [PDF]
Sensors (Basel), 2022 He P, Shen L, Henson B, Zakharov YV.
europepmc +1 more source