Safety and Security Systems
Wednesday 10th November 2010, 1100hrs–1230hrs
Chaired by Jan Dobkowski Inspecting the Inside of Objects Lying on the Seafloor Dr. Vladivoj Valkovic, A.C.T.d.o.o., Croatia The existence of a data base of potentially explosive devices on the coastal sea floor, especially ports and waterways, is of paramount importance. However, the sea floor is littered by number of different objects and the water is not very transparent on such locations. This makes the identification of objects extremely difficult even on known locations. In order to demonstrate the possibility of identifying the material within the objects on the sea floor we have performed tests with the 14 MeV sealed tube neutron generator incorporated inside a small submarine, SURVEYOR. The materials inside the investigated objects were identified by measuring the gamma ray spectra induced by neutron irradiation and by measuring the time-of-flight spectra: alpha particle (start)- gamma ray (stop). The new field test facility and measurements done at this location in the framework of the EU FP7 project UNCOSS are discussed in detail. Rapid Environmental Assessment with a Multibeam System and a 3D Sonar Prediction Model Mr. Markus Schaefer, L-3 Communications ELAC Nautik GmbH, Germany Naval operations in confined and shallow waters require an accurate picture of the environmental circumstances. Often these data are obsolete, inexactly or absent, especially at out of area operations. One possibility to obtain this assessment is using a multibeam survey system for in situ data acquisition together with a sonar prediction toll which calculates and present the detection performance of a sonar system in 3D. ELAC will present an approach of using a commercial of the shelf multibeam sonar system to collect a part of the necessary data. This system can be easily adapted to fit on various platforms like dinghies or unmanned surface vehicles (USV). The SeaBeam 3050 multibeam provides bathymetric and backscatter data of the sea bottom, an image of the water column (WCI) and side scan data. These data can also be used for sonar prediction based on real environmental data. Submarine Search and Rescue: Extended Approach Mr. Otto Duarte Voelker, L-3 Communications ELAC Nautik GmbH, Germany Despite advanced navigation systems and the end of the cold war, the incidents with submarines have not decreased. As a matter of fact, from 2000 up to date nearly twenty incidents involving submarines have been reported: Among the most notorious incidents the Russian Kursk explosion mid 2000... After an explosion that destroyed the torpedo room and triggered further detonations, the emergency systems should have been activated. Emergency buoys, intended to help rescuers to locate the distressed submarine, should have been released by sudden pressure changes or fire, but unfortunately this was not the case. Under normal circumstances the emergency buoy will be deployed and lead the rescue vessel to the position of the distressed submarine, but what will happen if the buoys are not deployed as it happened with the Kursk, or if the buoys are released, but drifting away? L-3 ELAC Nautik will present a complete approach for search and localization, mission planning a communication with distressed submarines using acoustical sensors:
acoustical search and localization by means of Pinger Localization Sonar;
geo-referenced 3D site visualization by means of high resolution multi beam echo sounders;
high resolution imaging by side scan sonar;
complemented by analog / digital communication with Underwater Telephone.
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