Abstract :
The Italian Institute For Nuclear Physics, INFN, has under manufacturing a set of synchronous acoustic beacons that will be laid in 3000 m of water depth to position a large number of optical modules. The technology demonstrator is located offshore Catania. In the final configuration, future detectors will be occupying a cube having one kilometre in all dimensions. The system composed of up to 5 seabed synchronous beacons and a number of acoustic digital receivers mounted inside the pressure housings will offer a sub-metric accuracy. Delivery of the system will take place in 2005. For this application, ACSA Underwater GPS, INFN partner, will introduce a new technology known as Time Spectral Spread Codes, "TSSC". The presentation will cover underwater positioning techniques: system architecture, technical and advanced data processing aspects.
Keywords :
oceanographic equipment; oceanographic techniques; position control; 3000 m; ACSA Underwater GPS; Catania; Italian Institute For Nuclear Physics; acoustic digital receivers; data processing; optical modules; seabed synchronous beacons; submetric accuracy; synchronous acoustic beacons; system architecture; time spectral spread codes; underwater positioning techniques; Acceleration; Astronomy; Earth; Global Positioning System; Neutrino sources; Optical receivers; Probes; Protons; Telescopes; Underwater acoustics;
