Results 101 to 110 of about 32,987 (227)

Research and Development of a Highly Reconfigurable OFDM MODEM for Shallow Water Acoustic Communication

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

Programmed unmanned aerial vehicles show great potential for monitoring marine megafauna in specific areas of interest

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, Valdemar Palmqvist, Johanna Stedt   +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, Grant van der Heever, Charles von der Meden, Hannah Truter, Stephen J. Lamberth, Ofer Gon   +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

Scalable low‐cost seabed landers: the missing link for sustained, integrated, long‐term observations in dynamic shallow seas

Remote Sensing in Ecology and Conservation, EarlyView.
Seabed landers, when equipped with a range of biotic and abiotic sensors, offer a non‐invasive and cost‐effective solution for ecosystem‐scale monitoring of Essential Biodiversity Variables (EBVs) and Essential Ocean Variables (EOVs) in dynamic shallow seas.
Arienne Calonge, Roeland Develter, Carlota Muñiz, Clea Parcerisas, Jan Reubens, Wieter Boone, Klaas Deneudt, Elisabeth Debusschere   +7 more
wiley   +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

Multi‐Platform Deployments of Low‐Cost Devices for Cetacean Passive Acoustic Monitoring

Remote Sensing in Ecology and Conservation, EarlyView.
Recent advances in affordable, user‐friendly devices offer new opportunities to overcome cost constraints of underwater passive acoustic monitoring (PAM) and expand acoustic data collection. In this study, we deployed low‐cost acoustic recorders and underwater cameras across a range of platforms in the Western Mediterranean, including fishing gear ...
Greta Jankauskaite, François Poisson, Irati Abascal, Javier Menéndez‐Blázquez, Clara Cánovas Pérez, Sofia Conti, Ricardo Sagarminaga, Juan Antonio Raga, David March   +8 more
wiley   +1 more source

Dual-Transformer Feature Enhancement for Infrared Small-Dim Target Detection

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Infrared small-dim target detection constitutes a critical technology with broad applicability across both remote sensing and surveillance. Despite recent remarkable progress, deep learning-based methods still struggle with weak signal strength, low ...
Guoliang Hu, Linyu Fan, Haodi Xu, Changqing Lin, Xinghao Ding, Yue Huang   +5 more
doaj   +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

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