Objective Development of a new generation of sonar systems for seafloor imaging.A prototype high resolution sea floor mapping system has been development, making use of sophisticated signal processing, synthetic imaging algorithms and wide band transducer design. Software simulations of the performance of wide band synthetic sonar have been constructed, to assess image processing schemes. Numerical models of sonar echoes backscattered from the sea floor have been completed to determine how to interpret the data. The feasibility of towing a device from a vessel was investigated. Tests were carried out in water tanks, and parameters of experimental prototypes calculated from theory and experiment. Sea trials have been conducted to prove the feasibility of such a prototype (May 1993).This will have to ensure both a great ease of use and high performances. To reach these aims, these systems will include innovative technology of wide-band signal processing and more particularly of synthetic aperture: while classical imaging systems (sonar) consider the ship movement as an external parameter and provide for each position a "snapshot", the synthetic aperture sonars integrate these movements in the processing. As opposed to classical sonars, for which increasing the resolution proceeds from an increase of the array length (problem of manoeuvrability), a synthetic aperture sonar allows it to reach the same resolution using a small-sized towed array. The complexity of the system is thus no longer the immersed mechanical parts, but the electronic instrumentation, the signal processing and the trajectory systems. All these will be developed in this project to provide an accurate mapping of seafloors and a seabottom classification. Fields of science natural sciencescomputer and information sciencessoftwareengineering and technologyelectrical engineering, electronic engineering, information engineeringelectronic engineeringsignal processing Programme(s) FP2-MAST 1 - Specific research and technological development programme (EEC) in the field of marine science and technology (MAST), 1989-1992 Topic(s) Data not available Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator IFREMER - INSTITUT FRANÇAIS DE RECHERCHE POUR L'EXPLOITATION DE LA MER EU contribution No data Address Rue Jean-Jacques Rousseau 155, Technopolis 40 92138 ISSY LES MOULINEAUX France See on map Total cost No data Participants (7) Sort alphabetically Sort by EU Contribution Expand all Collapse all CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE France EU contribution No data Address Chemin Joseph Aiguier 31 13402 MARSEILLE See on map Total cost No data Danish Maritime Institute Denmark EU contribution No data Address 99,Hjortekærsvej 2800 Lyngby See on map Total cost No data FOUNDATION OF RESEARCH AND TECHNOLOGY - HELLAS Greece EU contribution No data Address Vassilika Vouton 71110 IRAKLION See on map Total cost No data Institut de Chimie et de Physique Industrielles de Lyon France EU contribution No data Address 31 place Bellecour 69298 Lyon See on map Total cost No data RESON A/S Denmark EU contribution No data Address 13,Fabriksvangen 13 3550 SLANGERUP See on map Total cost No data TECHNICAL UNIVERSITY OF DENMARK Denmark EU contribution No data Address Anker Engelundsvej 1, Building 101 2800 LYNGBY See on map Total cost No data UNIVERSITY OF NEWCASTLE UPON TYNE United Kingdom EU contribution No data Address NE1 7RU Newcastle upon Tyne See on map Total cost No data
