Results 41 to 50 of about 3,620 (223)

Compressed Underwater Acoustic Communications for Dynamic Interaction with Underwater Vehicles [PDF]

Proceedings of the International Conference on Underwater Networks & Systems, 2019
Underwater vehicles are utilized in various applications including underwater data-collection missions. The tethered connection constrains the mission both in distance traveled and number of vehicles that can run in the same area, while the addition of acoustic communications onto the vehicles grants them several functionalities.
Mehdi Rahmati, Archana Arjula, Dario Pompili   +2 more
openaire   +2 more sources

A MAC Protocol to Support Monitoring of Underwater Spaces

Sensors, 2016
Underwater sensor networks are becoming an important field of research, because of their everyday increasing application scope. Examples of their application areas are environmental and pollution monitoring (mainly oil spills), oceanographic data ...
Rodrigo Santos, Javier Orozco, Sergio F. Ochoa, Roc Meseguer, Gabriel Eggly, Marcelo F. Pistonesi   +5 more
doaj   +1 more source

Acoustic projectors make covert bioacoustic chirplet signals discoverable

Scientific Reports, 2023
To disguise man-made communications as natural signals, underwater transceivers have the option to pre-record animal vocalizations, and play them back in a way that carries meaningful information for a trained receiver.
Paolo Casari, Jeff Neasham, Guy Gubnitsky, Davide Eccher, Roee Diamant   +4 more
doaj   +1 more source

A Novel Simulation Platform for Underwater Data Muling Communications Using Autonomous Underwater Vehicles

Computers, 2021
Autonomous Underwater Vehicles (AUVs) are seen as a safe and cost-effective platforms for performing a myriad of underwater missions. These vehicles are equipped with multiple sensors which, combined with their long endurance, can produce large amounts ...
Filipe B. Teixeira, Bruno M. Ferreira, Nuno Moreira, Nuno Abreu, Murillo Villa, João P. Loureiro, Nuno A. Cruz, José C. Alves, Manuel Ricardo, Rui Campos   +9 more
doaj   +1 more source

A multipath fading channel model for underwater shallow acoustic communications

, 2012
In these last years, many studies have focalized on the design of reliable under water acoustic communication systems. However, the ocean acoustic communication channel exhibits strong amplitude and phase fluctuations and the phenomena of diffraction ...
F. Veltri, Fazio P., P. Fazio, De Rango F., Veltri F., F. De Rango   +5 more
core   +1 more source

Enabling Under Ice Glider Operations: A Backseat Driver Approach

Journal of Field Robotics, EarlyView.
ABSTRACT Polar Oceans are key locations for forcing global ocean circulation, influencing both global climate and biogeochemical cycles. Due to restricted access to these seasonally and perennially ice‐covered regions, these areas are severely undersampled.
Yaomei Wang, Benjamin Allsup, Georgios Salavasidis, Stephen Woodward, Adeniyi Adenaya, Mike Smart, Alexis Johnson, Felipe Marques Dos Santos, Jake Ludgate, Daniel Matterson, Alvaro Lorenzo, J. Alexander Brearley, Alexander Brian Phillips   +12 more
wiley   +1 more source

Organizational Soundscapes and the Sonicity of Voices: The Power of the ‘Sounds’ that Carry ‘Words’

Journal of Management Studies, EarlyView.
Abstract Organizations are soundscapes – they resonate with sounds and particularly the sounds of voices. Somehow however voice sonics, that is the sounds of voices and not the words carried on those sounds, have escaped attention in management studies. This absence of analysis is peculiar given voice sonics' undoubted influence on management (they may
Nancy Harding, Jackie Ford
wiley   +1 more source

An environmental equalizer for underwater acoustic communications Tested at Hydralab III [PDF]

, 2010
It is known that small changes in source and receiver locations can cause significant changes in underwater acoustic channel impulse responses. At HYDRALAB III an underwater acoustic experiment was conducted to show that a source depth-shift causes a ...
Silva, A., Mertins, C., Ijaz, S., Jesus, S. M., Zabel, F.   +4 more
core  

Tributary‐scale oyster reef restoration in Harris Creek, Maryland: lessons from a decade of planning, implementing, and monitoring

Restoration Ecology, EarlyView.
Abstract Introduction In response to the decline of eastern oyster (Crassostrea virginica) populations in Chesapeake Bay, a large‐scale restoration initiative was launched in Harris Creek, Maryland, in 2011. This effort marked a shift from fragmented projects toward a coordinated, sanctuary‐based approach to oyster restoration.
Stephanie R. Westby, Steve Allen, Jodi Dew‐Baxter, David Bruce, Olivia N. Caretti, Jay Lazar, Jennica Moffat, Laurinda Serafin, Ward Slacum, Angela Sowers, Eric Weissberger   +10 more
wiley   +1 more source

Block-FFT Based OMP for Compressed Channel Estimation in Underwater Acoustic Communications

, 2015
Due to the sparsity in the delay-Doppler domain of the underwater acoustic (UWA) channel, compressed channel estimation (CCE) can effectively reduce the required number of pilots, which is desirable for low bit-rate underwater acoustic communications ...
Yu, Fangyuan, Guo, Qing, Wang, Zhenyong, Xiang, Wei, Wang, Zhenyong, Li, Dezhi   +5 more
core   +1 more source