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Sprial source test and ppcoming TRIDENT sea trial

Spiral source test, project K2D

Pool test of acoustic source to follow emitter (click below to see video)

Baseline survey sea trial, project TRIDENT'24


Baseline survey sea trial on board R/V Mário Ruivo (IPMA) to gather environmental status data to support WP2 tasks, and provide reference field data for ocean bottom exploration impact estimation. Acoustic data will include a fixed point vertical line array and an acoustic recorder equipped SeaExplorer glider from ALSEAMAR.

Web Directory

> Sea Trials NEW
Results, past sea trials, data...

> Numerical Models
for acoustic propagation, ocean circulation,...

> TV-AP Model
Acoustic channel simulator for moving target...

> Advanced courses
Short courses, Stages...

> Equipment
Sources, buoys, arrays

> Acoustic data
acoustic data samples from past sea trials available for download...

last update: 07-Jun-2024

Recent publications:

signals logo Search Space Reduction for Localization and Tracking of an Acoustic Source, Signals, 4 478-488 [PDF] June 2023.
sensors logo In-Lab demonstration of an underwater acoustic spiral source, Sensors, 23 4931 [PDF] May. 2023.

JMSE logo A Methodology for Shipping Noise Field Calibration and Excess Noise Estimation: the Azores Case Study, J.Mar.Sci.Eng, Vol.10, 1763 [PDF] Nov. 2022.

Featured products:

Logo of project JONAS


download zip or github, a Python open source version of the PAMGuide package for Passive Acoustic Monitoring that features the Exchange Data Format (EDF) for facilitated underwater acoustic data sharing and metadata handling. Python allows for a crossplatform licence free processing of raw acoustic data and EDF output. A library of Python routines for EDF data reading and writing are also available. See manual here.

Head wave propagation using Traceo


an efficient Gaussian beam 2D ray tracing model for underwater acoustic propagation, handling full bottom and water column range dependency, obstacle scattering and producing particle velocity outputs. See manual here and download a free copy for Fortran. A C version for linux and/or Windows is available here and for GPU here.