Delory, Eric

Manuel Lázaro, Antonio

Waldmann, Christoph

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INSTRUMENTATION VIEWPOINTConferences4SENSOR INTEROPERABILITY IN THE FRAMEWORK OF OCEAN OBSERVATORIESC. Waldmann (1), Antoni Manuel (2), Eric Delory (3)(1)MARUM-Center for Marine Enviromental SciencesUniversity of Bremen, Klagenfurter Str., 28359 Bremen, GermanyTel. +49-421-21865606, E-Mail waldmann@marum.de(2)Universitat Politecnica de Catalunya, Spain (3) dBscale, Spain 1. IntroductionThe establishment of permanent ocean observatories is a promising approach for monitoring the ocean interior in particular in regard to detecting the advent and consequences of sudden changes on the environment. From a technical perspective it is important to assure a seamless integration of all the needed subcomponents into the sys-tem. This is in particular of importance for the front end of the system, the sensors and instruments to be integrated. Enabling sensor interoperability by introducing standards is a com-pletely new concept in ocean sciences as there has been no real need for it in the past. Just to be able to deal with the anticipated complex-ity of the observatory structure standardisation has been recognized as indispensable.Currently a number of technical groups have been established as part of the ongoing ocean observatory initiatives where according projects are running in Europe (ESONET), North America (NEPTUNE, MARS) and Japan (DONET,ARENA). On top of the technical issues it will be of utmost importance to come up with a coherent standardisation and interoperability concept that can only be achieved by a close cooperation between all ongoing initiatives. 2. Results and DiscussionThe aim of the interoperability activity is to come up with a general process model of the measuring process. This has already been start-ed as part of the development of the SensorML content standard. In its simplest implementation SensorML is used to defi ne standard dig-ital methods of providing specifi cation sheets for sensor components and systems.In a next step it is necessary to judge about the quality of the data where a clear defi nition of the factors that infl uence the measure-ment process should exist (see fi g 1). Figure 1: Generalised sensor schemeAll the information that describes the measuring process has to be made available in a standard format to make it possible to further process the data with diff erent, user specifi c evaluation schemes. This also implies that the measured data that ocean observatories make available are interoperable which in this case means that at a certain stage of the data processing chain web services are forming the in-terface between the user and the individual sensor system.This paper will give an overview about the current status in this fi eld.3. AcknowlegdmentThis work is supported by the European Commission as part of the NoE ESONET, Contract no.: 0368514. References[1] Alliance for Coastal Technologies, Sensor Inter-operability Portland, Maine October 16-18, 2006 [2] Waldmann, C., Diepenbroek, M., Visser, U., Semantic Infrastructure for Marine Geosensor Networks, GI-Tage Muenster, 2005DEVELOPMENT AND TEXT OF THE DELFIMX CATAMARANCarlos SilvestreInstitute for Systems and Robotics (ISR)Instituto Superior Tecnico (IST )Lisboa, PortugalThis talk will present the DELFIMx catamaran that is an autonomous surface craft developed at ISR/IST for automatic marine data acquisi-tion and to serve as an acoustic relay between submerged craft and a support vessel. The talk will describe the navigation, guidance, and control systems of the vehicle, together with the mission control system that allows end-users to seamlessly program and run scien-tifi c missions at sea. Practical results obtained during sea tests in the Sines, Portugal will be briefl y summarized and discussed.Marine biologists and researchers depend on technology to conduct their studies on time and space scales that suit the phenomena under study. Several oceanography missions can be performed automati-cally by Autonomous Surface Craft (ASC), like bathymetric operations and sea fl oor characterization. ASC vehicles not only serve research purposes but can also be used for performing automatic inspection of rubblemound breakwaters, as required by the MEDIRES project. In the scope of this project, the autonomous catamaran DELFIMx, built 

Sensor interoperability in the framework of ocean observatories

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