Département Réseau, Sécurité et Multimédia Rapport d'Activités 2008

Geo-localization aspectsThanks to the positioning technologies, basedon EGNOS, aided by additional sensors toensure a high level of integrity, the interveningvehicles will be able to navigate precisely andaccurately up to the accident or disasterlocation and the main stationary headquarters(typically the fire station) will be informedprecisely about their progress. For the difficultissue of tracking the firemen inside a big sitesuch as a factory of a ship, novel positioningtechniques such as high-sensitivity or assistedGPS receivers, combined with inertial sensorsand 3D map-matching will be developed andexperimented.As far as research on positioning is concerned,partner ENSIETA is presently investigatingdifferent positioning technologies that could beutilized for the challenging indoor navigation.The basic idea is to combine severaltechnologies: high-sensitivity GNSS receiversfor the areas where GNSS signals arepenetrating, MEMS inertial measurement unitsfor the traveled distance based upon thenumber and size of steps, the directionprovided by the gyros and magnetometers andadvanced map-matching algorithms basedupon the 2D or 3D map of the area and thetopological constraints (1). First results fromthe LoCoSS project concern the firemenlocalization in constrained environment (forest,indoor, city…) where GPS position is notprecise enough. TELECOM Bretagneinvestigates also together with ENSIETAtechnical methods to improve localizationaccuracy within multipath environments.Geographical InformationSystem aspectsFinally, on top of the geolocalisation andcommunication infrastructure, a GeographicalInformation System (GIS) will act ascomputing software able to integrate, store,model, analyze and visualize spatially relateddata. The information system of the LoCoSSproject will be used to build and to update anon-board database limited to the necessaryinformation to support the operations in agiven area. This “mobile database” will have tobe extracted from the main one at securityheadquarters. Similarly, the main databaselocated at the fire station will have to beinteractively updated in real-time during theprogress of the rescue operations. Amongstthe interesting dynamic data to integratewithin databases are firemen and vehiclespositions and movements. The continuousrecording of such data is essential for real-timefollowing of actual operations. These studiesare mainly covered by IRENAV from ÉcoleNavale.ConclusionThe project will develop mechanisms toacquire the real-time data coming from thegeo-localized vehicles and people through thewireless communication links and to storethem in an appropriate database. Spatiotemporalqueries to database will be developedto handle and display these dynamic data onthe existing firemen’s interface. Overallobjective will be to visualize the progress ofthe deployed forces and to make decisions inreal-time thanks to the global view of thesituation. A prototype system is planned to bebuilt next two years to demonstrate with thepartnership of fire brigades of Côtes d’Armorand Finistère departments the efficiency of theproposed security services.References[1] L. Suciu, J.-M. Bonnin, K. Guillouard,and T. Ernst. Multiple Network InterfacesManagement for Mobile Routers. In 5thInternational Conference on ITSTelecommunications (ITST 2005), Brest,France, June 2005.[2] M. Mahamat-faki, J.-M. Bonnin, and R.Ben Rayana. Traffic flow control on multitunneledmobile router. In short paper inWNEPT06 (Workshop on Networking in PublicTransport), Waterloo, Canada, August 2006.[3] Patrick Bosc, Olivier Sentieys, FrançoisPeyret, Cyril Ray, Jean-Marie Bonnin, Yvon-Marie Le Roux. GIS ITS Bretagne: status andperspectives, 6th International Conference onITS Telecommunications, Chengdu, China, 21-23 June, 2006.[4] R. Garello, Y. Le Roux, G. Landrac, C.Claramunt, R. Person, F. Vallée. GalileOcean,6th International Conference on ITSTelecommunications, Chengdu, China, 21-23June, 2006.Pracom’s Annual Report 2008 63