|Funding Reference||Fundação das Universidades Portuguesas - Ministry of Defence|
The LOCAPASS project aims at developing an integrated system for passive source localization using a single or a small number of acoustic sensors. The principle is based on using the environmental information as modeled by an acoustic propagation model to discriminate a perturbation introduced by an active source. Previous results have shown that: i) if the sound source has a relatively large time-bandwidth product and ii) the environment is sufficiently known and stable, it is indeed possible to obtain single sensor source localization in range and depth. Actual improvements on the receiving system to provide some horizontal aperture and provide rough bearing estimation as well.
1- To study the feasibility of a single sensor source localization system.
Signal and Image Processing Group (SIPG)
Source Localization with a Random Field of Sonobouys in Shallow Water
 António Silva, Sérgio Jesus, Underwater Communications Using Virtual Time Reversal in a Variable Geometry Channel, Proc. IEEE/MTS Oceans'02, Biloxi, USA, 2002 - PDF
 Sérgio Jesus, António Silva, Virtual Time – Reversal in Underwater Communications: Results on the INTIFANTE00 Sea Trial, Forum Acusticum, Sevilla, Spain (Invited), 2002
 Nelson Martins, Sérgio Jesus, Blind Channel Estimation with Data from the INTIMATE96 sea trial, Proc. MED'2002, WA7-3, Lisboa, Portugal, 2002
 Nelson Martins, Sérgio Jesus, C. Gervaise, A. Quinquis, Time-Frequency approach to multipath underwater channel deconvolution, ICASSP'02, Orlando, USA, 2002
 Sérgio Jesus, Cristiano Soares, António Silva, Acoustic Oceanographic Buoy testing during the Maritime Rapid Environmental Assessment 2003 sea trial, Rep. 04/03, SiPLAB Report, University of Algarve, 2003 - PDF