SiPLABoratory

SeaGrass 10-19 Oct 2011

This is a sea trial at the STARESO - Station de Recherches Sous-marines et Oceanographiques in Corsica. Our objective is to measure how the Seagrass oxygen production during its daily cycle affects the propagation of sound in the ocean. The received acoustic signal can be analyzed to infer on the oxygen production on a given transect. People involved from UALg: P.Felisberto, F.Zabel and C.Martins. [ online blog]

UAN11 23-28 May 2011

This sea trial took place in the Trondheim Fjord (Norway) in the workframe of the UAN project. This test comprised the deployment of a number of communication nodes including AUV's, fixed nodes and communication arrays in order to obtain a realistic representation of an adhoc underwater acoustic network. It will involve efforts from various research groups at CINTAL (Portugal), ISME (Italy), Kongsberg (Norway), SINTEF (Norway) and SSI(Italy). People involved from UALg: S.M. Jesus, A. Silva, F. Zabel, C. Martins and Usa Vilaipornsawai. [ online info]

OAEx'10 November 2010

This sea trial took place off Cabo Frio region (Brazil) in the workframe of the OAEx project. This test comprised the deployment of a number of acoustic and non acoustic assets near and off the coast. The idea is to explore the capabilities of acoustic signals to estimate the static and dynamic characteristics of the area, prone to a strong upwelling regime from the south. People involved from UALg: P. Felisberto, P. Santos, N. Martins and S. Ijaz .

UAN10 6-25 September 2010

This is a sea trial that took place nearby Pianosa Island, off the italian coast, South of Elba I. in the workframe of the UAN project. This test will comprise the deployment of a number of communication nodes including AUV's, fixed nodes and communication arrays in order to simulate an adhoc underwater acoustic network. It will involve efforts from various research groups at CINTAL (Portugal), ISME (Italy), Kongsberg (Norway), from NATO Undersea Res. Centre (La Spezia, Italy) and from the Italian Navy. People involved from UALg: A. Silva, F. Zabel, C. Martins and Usa Vilaipornsawai. [ online info]

WEAM - Phitom joint Sea Trial 22-25 June 2010

This sea trial took place off the port of Vilamoura (Portugal) from 22 - 25 June 2010 with the aim of testing field calibration techniques for the WEAM project and performing communication transmissions to/from drifting multiple receivers for testing both channel geometry compensation time-reversal techniques as well as diversity combining techniques underthe Phitom project. This common experiment took advantage of common equipment to be used in both projects and the fact that different frequency bands are being used allowing for a best optimization of time and resources. Equipment included two free drifting AOB's and CINTAL's mid and high frequency suspended sources. People involved from UALg: P. Felisberto, F. Zabel, C. Martins and F. Lopes and other personnel from WEAM and Phitom partners (WEC and ISR-Lisboa). [...more]

PICO 2010 June 2010

A noise measurement test took place off the Island of Pico (Azores) nearby the wave energy generator facility in June 2010. This test is foreseen under the WEAM project as a preliminary step for characterizing the propagation of acoustic noise generated in the ocean by wave energy generators. People involved from UALg: P. Felisberto and other personnel from WEC and Marsensing. [...more]

UAN Eng. Test March 2010

This is an engineering test that took place off the port of Vilamoura (Portugal) on March 17, 2010 with the aim of testing the base station hardware developed under the UAN project. The base station is composed bya 16 hydrophone array, a telemetry unit and a Kongsberg modem. This system will be deployed as show in the figure, and communication signals will be transmitted from another boat using either the Kongsberg modem or a dedicated sound source. People involved from UALg: A. Silva, F. Zabel and C. Martins and personnel from other UAN partners. [...more]

UAB'07 Sea Trial 2 - 16 September

This sea trial takes place in the Hopavagen Bay and Trondheimsfjord in Norway from September 2 to 15, 2007, involving the University of Algarve (UALG) and the Ocean Acoustics team from NTNU (NTNU). The objectives of the experiment includes testing a transmit receive array newely developed at SiPLAB, and its usage as acoustic barriers for detecting underwater intruders and underwater communications (MIMO). People involved from UALg: S.M. Jesus, A. Silva, F. Zabel and C. Martins.[...more]

RADAR Sea Trial (RADAR'07), 9-16 July

The RADAR'07 sea trial took place on the Portuguese Continental Shelf off the town of Setúbal, 50 km south from Lisboa. This sea trial involves teams from the Hidrographic Institute of the Portuguese Navy, the NATO Undersea Research Centre (NURC), La Spezia, Italy, the company Heat Light and Sound Research (HLS), Sand Diego, USA, the Naval Research Laboratory (NRL), Stennis, USA, and the University of Algarve (UALG), aboard two research ships: the NRP Auriga and the NRP D. Carlos I from July 9 to 16. The objectives of this experiment are centered on ocean acoustic tomography, both low frequency using the network tomography concept (UALG) and high frequency for detecting features such as internal waves and sea currents (NURC). Other topics include ocean circulation prediction (NRL), underwater communications and time reversal testing (HLS,UALG). People involved from SiPLAB: S.M. Jesus, C. Soares, F. Zabel and C. Martins.[...more]

Blue Planet Experiment (BP'07)

The BP'07 sea trial took place in the area South from Elba Island in Italy, from April 20 to May 2, and involves two oceanographic ships: the HrMs Snellius from the Dutch Royal Navy and the NRV Leonardo from the NATO Undersea Research Centre (NURC, Italy) and research teams from the Université Libre de Bruxelles, TNO, the Netherlands Royal Navy College, NURC and University of Algarve. People involved from SiPLAB: S.M.Jesus, C. Martins and F. Zabel. [...more]

RADAR Sea Trial (RADAR'06)

The RADAR'06 sea trial took place on the Portuguese Continental Shelf off the town of Nazaré, approximately 100 km north from Lisboa. This sea trial involved teams from the Hidrographic Institute of the Portuguese Navy, the University of Lisboa (FCUL) and the University of Algarve, aboard the research vessel Auriga, from July 7 to 13, 2006. People involved from SiPLAB: S.M. Jesus, C. Soares, N. Martins, F. Zabel and C. Martins.[...more]

MakaiEx sea trial

This sea trial took place off the Island of Kauai in Hawai (USA) from Sep 11 to Oct 2, 2005 aboard the research vessel Kilo Moana. This experiment involved a large number of institutions with the overall objective of testing high-frequency acoustic methods for environmental based underwater communications, HF tomography, underwater MIMO, HF matched-field processing, time-reversal or PPC based communications, etc...People involved from UALg: S.M. Jesus, A. Silva and F. Zabel. [...more]

ATOMS'04 sea trial

This sea trial took place off the cape of St. Vincent (Portugal), the southwestern most point of Europe from Oct 22 - 26, 2004 aboard the NRP D. Carlos I, with the participation of Instituto Hidrográfico and several teams from the University of Algarve (SiPLAB, EST and CIMA). The objective was to observe in situ and with acoustic tomography the upwelling filament structure off the west coast of Portugal. In fact only the oceanographic observation part was achieved due to the weather conditions in the area and in this period of the year. An example of an observed filament is shown here. People involved from UALg: S.M. Jesus, A. Silva, P. Felisberto, L. Farinha and C. Soares. [...more]

MREA'04 sea trial

This second participation of SiPLAB on an REA took place during 6-11 April 2004, in an area off the portuguese west coast, south from Lisbon. SiPLAB was able to deploy its acoustic equipment including the ULVA array and the newly developed AOB to form a tomography network and provide environmental online estimates for inclusion in REA small scale models. This experiment took place under the AOB-JRP project. People involved from UALg: S.M. Jesus, A. Silva, P. Felisberto, C. Soares and L. Farinha. [...more]

MREA'03 sea trial

This sea trial was organized by the SACLANT Undersea Research Centre, La Spezia (Italy), in the area north of Elba Island, off the italian Tuscany coast, from May 28 to June 26, 2003. That was primarely set as an oceanographic sea trial for REA, as a preliminary equipment test under the upcoming AOB-JRP, to start on January 1st, 2004. The objective of SiPLAB participation was to test the new Acoustic-Oceanographic Buoy (AOB) concept for REA. An AOB prototype was deployed and succeded to acquire acoustic data transmitted to onboard ship via a wireless lan connection for imediate processing. People involved from UALg: S.M. Jesus, A. Silva and C. Soares. [...more]

INTIFANTE'00 sea trial

This sea trial was organized by Cintal, under the workframe of projects INTIMATE and INFANTE, with however the scope of acquiring acoustic data to support also projects TOMPACO and ATOMS. The sea trial took place in the area off the town of Setúbal, approx. 50 km south from Lisbon. Two vessels from the portuguese Hidrographic Institute (IH), Portuguese Navy, participated in the sea trial for deploying and recovering acoustic and oceanographic equipment. Other participating institutions were: ISR-IST, Lisboa, IH - Lisboa, and ENEA, Italy. People involved from UALg: S.M. Jesus, A. Silva, C. Soares and C. Lopes. [...more]

INTIMATE'96 sea trial

This sea trial was organized by SiPLAB, under the workframe of project INTIMATE. The sea trial took place in the area off the town of Nazaré, approx. 100 km north from Lisbon. Two vessels participated in the trial: the survey vessel "Andromeda" from the portuguese Hidrographic Institute (IH) and the "D'Entrecasteaux" from EPSHOM, France. Other participating institutions were: Saclantcen, La Spezia, Italy, IH - Lisboa, and CMO/SHOM, France. People involved from UALg: S.M. Jesus, A. Silva and F. Zabel. [...more]