Results 51 to 60 of about 22,596 (292)
Analysis for Underwater Sound on Natural River Habitat
E3S Web of Conferences, 2018 A riffle-pool structure is a representative physical structure of bed in rivers. The change in the physical parameter of the habitat could lead to changes in the sound environment of rivers, which are expressed by underwater acoustics.
Gu Jung-Eun +3 more
doaj +1 more source
Numerical modeling and simulation technique in time-domain for multibeam echo sounder
International Journal of Naval Architecture and Ocean Engineering, 2018 A Multibeam Echo Sounder (MBES) is commonly used for rapid seafloor mapping. We herein present a time-domain integrated system simulation technique for MBES development. The Modeling and Simulation (M&S) modules consist of four parts: sensor array signal
Donghwan Jung, Jeasoo Kim, Gihoon Byun
doaj +1 more source
Remote Sensing, 2023 Traditional two-step localization methods and direct localization methods have practical problems when they are used for underwater acoustic source localization.
Lu Wang +4 more
doaj +1 more source
Pattern Formation in Non‐Equilibrium Architected Materials
Advanced Materials Technologies, EarlyView.This article demonstrates an artificial mechanical system ‐ a robotic metamaterial ‐ as an accessible and versatile platform within which to explore and prescribe the reaction‐diffusion driven pattern formation hitherto associated with comparatively less accessible and versatile non‐equilibrium biological and chemical systems.
Vinod Ramakrishnan, Michael J. Frazier
wiley +1 more source
Underwater broadband sound insulation with chiral spiral structures
AIP Advances, 2020 Low-frequency noise has been a long-standing issue in the context of a complex underwater environment. While theory related to low-frequency sound insulation in air has been developed, systematic research on underwater sound insulation has not yet been ...
Huilan Wu, Chengpeng Hao, Han Zhang
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Underwater Acoustic Research Trends with Machine Learning: Active SONAR Applications
한국해양공학회지, 2020 Underwater acoustics, which is the study of phenomena related to sound waves in water, has been applied mainly in research on the use of sound navigation and range (SONAR) systems for communication, target detection, investigation of marine resources and
Haesang Yang +4 more
doaj +1 more source
Monitoring the sea environment using acoustics the role of the acoustical observatories [PDF]
, 2013 The presentation deals with theoretical factors and technical specifications pertinent to the design of an acoustical observatory for the monitoring of the marine environment. Two types of observatories are mentioned, namely active and passive. Among the
Taroudakis, Michael
core
Underwater acoustic tank evaluation of acoustic properties of samples using spectrally dense signals [PDF]
, 1999 4 pp.-- Comunicación presentada en: Joint Meeting "Berlin 99": 137th regular meeting of the Acoustical Society of America ; 2nd convention of the EAA: Forum Acusticum - integrating the 25th German Acoustics DAGA Conference. Berlin, March 14-19, 1999.This
Ranz Guerra, Carlos, Cobo, Pedro
core +1 more source
On–Off Switchable Micromotors for Use in Steerable Microvehicles
Advanced Robotics Research, EarlyView.Electrically controllable micromotors and microvehicles are developed by tuning the diffusion of the fuel. Self‐propelled micromotors using bubble propulsion show great promise for miniaturized devices with multiuse purposes such as cargo delivery and sensing. However, there is currently no method to electrically switch the micromotors on or off. Here,
Hugo Severinsson +3 more
wiley +1 more source
Mapping and Characterizing Subtidal Oyster Reefs Using Acoustic Techniques, Underwater Videography and Quadrat Counts [PDF]
, 2003 Populations of the eastern oyster Crassostrea virginica have been in long-term decline in most areas. A major hindrance to effective oyster management has been lack of a methodology for accurately and economically obtaining data on their distribution and
Adams, J R +4 more
core +1 more source