Marin Observation : From seabed to space - 12 > 16 octobre 2020
Actualités
      • Le 07/10/2020
      • Venez rencontrer iXblue à Sea Tech Week®

      • Venez rencontrer iXblue à Sea Tech Week®
      • A propos d'iXblue

        iXblue est une entreprise mondiale de haute technologie spécialisée dans la conception et la fabrication de technologies marines, photoniques et d'autonomie avancées. L'expertise interne du groupe comprend des systèmes et des solutions innovants consacrés à la navigation inertielle, au positionnement sous-marin, à l'imagerie sous-marine, ainsi qu'à la construction navale et aux tests et simulations. Les technologies d'iXblue aident les clients du secteur civil et de la défense à mener à bien leurs opérations en mer, sur terre et dans l'espace avec un maximum de sécurité, d'efficacité et de fiabilité. Employant un effectif de 650 personnes dans le monde entier, iXblue mène ses activités dans plus de 60 pays. iXblue à Brest est spécialisée dans les solutions acoustiques sous-marines basées sur l'utilisation de transducteurs et de capteurs acoustiques. Ses systèmes permettent le positionnement d'objets et de véhicules sous la mer avec une grande précision, les communications sous-marines et la communication avec les équipements de surface. Les solutions acoustiques d'iXblue permettent également d'imaginer avec précision les objets et les organismes vivants situés au fond de la mer.

        From sensors to solutions.

        Dernière actualité

        En tant qu'innovateur dans le domaine maritime, iXblue est un partenaire des instituts hydrographiques, océanographiques et des laboratoires de recherche du monde entier. Les projets actuels comprennent la construction du nouveau navire de recherche archéologique DRASSM Alfred Merlin, précurseur d'une nouvelle génération de navires économiques, écologiques et efficaces, qui embarquera des équipements de haute technologie développés par iXblue. L'entreprise fournit également des systèmes de positionnement et d'imagerie pour le nouveau AUV de l'IFREMER destiné à l'exploration en eaux profondes.

         

        Où trouver iXblue pendant la Sea Tech Week® ?

        Dans le salon d'exposition

        Découvrez le stand d'iXblue et discutez avec l'exposant pendant les 3 jours en direct.

        [Plus d'informations]

         

        dans l'e-conférence

        Gas release

        Guillaume Jouve, iXblue Sonar Systems Division, France ; Corentin Caudron, IRD-Institut des Sciences de la Terre (ISTerre), France ; Guillaume Matte, iXblue Sonar Systems Division, France

        Gas detection and quantification using iXblue Echoes high-resolution sub-bottom profiler and Seapix 3D multibeam echosounder from the Laacher See (Eifel crater lake)

        Wednesday 14th October - 09.00-11.00 | Papers session: "instrumentation, application to ocean observation"

        Gases are most often driving volcanic eruptions. Contrary to atmosphere, CO2 bubbles are easily detected in water column using hydroacoustic methods. Two studies have monitored gas venting into Kelud Crater Lake (Indonesia) from a hydroacoustic station shortly before volcanic eruptions in 1990 and 2007. However, quantification remains complex due to 3D structure of clouds and acoustic interactions between bubbles. It is thus necessary to accurately map bubble clouds, to monitor their evolution and possibly to dissociate different gas origins to reduce volcanic risk. We present results from sedimentary deposits and water column gas distributions and quantification at the Laacher See (Eifel, Germany), using Echoes high-resolution SBP and iXblue Seapix 3D MBES, respectively. Backscatter profiles of elements in the water column allow to distinguish fish and gas bubbles and highlight several concentrated colocation of bubble plumes. Ongoing research on the Target Strength (TS) of bubbles suggest they are of small size (~35 µm), which would explain why, in the same spot, we did not observe gas bubbles using camera mounted on ROV. This raises new perspectives to improve CO2 budget modeling from volcanic bubbles release. Meanwhile, the Echoes 10 000 provide more than 40 m of penetration with an 8 cm-resolution, and reveal paleoenvironmental and paleoclimatic reconstruction perspectives, 3D modeling of remobilized materials and tephra deposits from volcanic activity, as well as gas diffusion through the sediment.

         

        Gary Bagot, iXblue, France

        Delph Subsea Positioning Software - iXblue’s innovative software solutions for subsea positionings

        Thursday 15th October - 13.30-17.30 | Papers session MOQESM (session 2) - Robotics for marine observation

        Improving operational efficiency is a recurring challenge for subsea operations. Throughout the life of a field, from construction up to decommissioning, several subsea vehicles will be deployed to cover various tasks such as pipeline and structure installation, maintenance or repair. An ROV or AUV assigned to a specific task will require multiple positioning sensors (LBL, USBL, INS…) to complete its mission. Defining the “good enough” subsea positioning strategy, i.e. to ensure a minimum accuracy without compromise on safety, can be a complex exercise. For instance, an overestimation of the LBL transponders required will directly induce vessel time and finally costly operations. On the other hand, a certain level of positioning redundancy may be requested for a vehicle operating close to a subsea asset in production.

        To ease the design and monitoring of a subsea vehicle navigation, iXblue has developed an integrated solution. Not only has the company broadened its product range with the new intelligent Canopus LBL Transponder and the new generation Ramses transceiver, but with Delph Subsea Positioning Software, iXblue now provides a complete integrated solution for subsea positioning that goes a step further by bringing significant efficiency. Divided in 4 modules (LBL Array Planning, Navigation Simulation, Operations, DelphINS) with an intuitive user interface, Delph Subsea Positioning (DSP) is an integrated software suite for the preparation, the operation and the post-processing of iXblue positioning devices (USBL, LBL and INS).

        Nathalie Olivier, IxBlue, France

        Test results before the deployment of a subsea geodetic monitoring system

        Thursday 15th October - 13.30-17.30 | Papers session MOQESM (session 2) - Robotics for marine observation

        Geodetic networks at sea are necessary to monitor active faults and the long term displacement of tectonic plates. iXblue has developed a new integrated subsea monitoring system: Canopus

        The Canopus transponders are enable to regularly measure precisely the distance between the transponders that are in acoustic line of sight. The measurement are stored in a memory inside each beacon and can be collected from surface using acoustic modem. In collaboration with the IUEM, and in the framework of ERC Focus project, 8 Canopus beacons are going to be deployed at each side of the North Alfeo Fault in Sicilia for a  4 years monitoring program. To prepare the deployment, a first experiment took place in Brest Bay in July 2019. Thanks to Delph subsea positioning software, simulations enable to confirm acoustic line of sight between beacons considering the local bathymetry, the sound velocity profile and the height of the transponders above the seabed. We present here the test deployment and simulation results.

         

        DANS LA SALLE DES POSTERS

        Lionel Fauré, iXblue Sonar Systems Division, France ; Didier Charlot, iXblue Sonar Systems Division, France ; Frédéric Mosca, iXblue Sonar Systems Division, France ; Mathieu Couade, iXblue Sonar Systems Division, France

        iXblue ocean mapping from multibeam sonar synthetic aperture processing technique

        For the last 10 years, iXblue develops an Inertial Navigation Multibeam Sonar system able to provide realtime

        synthetic aperture georeferenced mapping. To meet the need of geological ocean floor mapping and deep-sea mining activity requirements, iXblue is able to image 1.8 km of swath at once with a 10cm definition map. This paper will present the evolution and benefits of iXsas processing and ultimate resolution vs swath coverage achieved by iXblue technology compared to classical side scan sonar. Inertial non Coherent integration and Coherent Processing allows different survey strategy and an optimisation of operation time.

         

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