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Acoustic propagation models:
Acoustic propagation
An example of head wave propagation from a bottom located acoustic source to a vertical array of receivers. The acoustic signal is totally reflected at the sea surface and partially transmitted at the sea bottom interface generating a seabed compressional wave. The wavefronts cross the array at successive times and arrival angles according to the various reflections generating the so-called arrival pattern fully characterising the environment through which the signal has propagated. That is the basis of environmental-based underwater signal processing developed at SiPLAB. This example was obtained using the TRACE model developed at SiPLAB by O. Rodríguez (for more information see other models).Web Directory
Sea Trials
Results, past sea trials, data...
Numerical Models
for acoustic propagation, ocean circulation,...
Advanced courses
Short courses, Stages...
Equipment
Sources, buoys, arrays
Data repository
acoustic data,
oceanographic information, past sea trials...
Starting projects:
Vector sensor system for ocean exploration (SENSOCEAN - PTDC/EEA-ELC/104561/2008)
SENSOCEAN is a project aiming at developing an acoustic vector sensor array (VSA) for an underwater mobile platform (AUV) with application in acoustical exploration of the marine environment. Acoustic vector sensors measure both pressure and the three components of particle velocity. This project is funded by PTDC programme, with 197.445 Euro for 3 years. Starting date: January 1st, 2010. Partnership: CINTAL - Centro de Investigacao Tecnologica do Algarve. People involved: P. Felisberto (Coordinator), O. Rodriguez, P. Santos and S.M. Jesus (CINTAL). [...more]Top Articles:
Bayesian acoustic prediction assimilating oceanographic and acoustically inverted data,
J. of Marine Systems, 78, Sup.1, p.S349-S358, Nov. 2009
[PDF]
Adaptive spatial combining for passive time-reversed communications,
J. Acoust. Soc. America, 124(2), p.1038-1053, Aug. 2008 [PDF]
Environmental and Acoustic Assessment: the AOB concept J. of Marine Systems,
vol. 69, p.114-125, Jan. 2008[PDF].
Environmental Inversion Using High-Resolution Matched-Field Processing,
JASA, 122(6), p.3391-3404, Dec. 2007 [PDF]
Related Readings:
Acoustic REA
New integrated and easy to use tools for ocean observation,
data retrieval and information sharing. Reconfigurable sensor networks both for military and
civilian applications..[more].
Harbor protection
on going projects, developed equipment, technological tools,
sea trials and theoretical results [more].
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