Jirka - Integrating the ogc sensor web enablement framework into the ogc catalogue

Integratithng OGCe S Wensor be Enablement Framework into the OGC CatalogueSimon Jirka, Daniel Nüst, Jan Schulte(Westfälische W ilhelms-Wilhelms Universität Münster) Frédéric Houbie(ERDAS)Overview• Introduction• Sensor Discovery – Elements– Architecture• SensorML Discovery Profile• SensorML-ebRIM Mapping• Catalogue Link• Outlook and ConclusionWebMGS 2010Introduction• Sensor networks are used in a broad range of applications• OGC Sensor Web Enablement: Integration of sensors i ntointo S DIsSDIs• Discovery functionality currently missing in th SWEe f ramework• Full integration into SDI needs Catalogue support for SWEWebMGS 2010Sensor Discovery• Sensor discovery comprises– Searching forfor sensors – Searching for sensor data – Searching forfor Sensor Web s ervicesservices• Most important search criteria– Time– Space– Obdserve propertyWebMGS 2010Sensor Discovery - Elements• Describe the metadata of sensors SensorML Discovery Profile• (Automatically) collect metadata of sensors Harvesting metadata fromfrom SWESWE services • Support the dynamic structure of sensor networks Handling of sensor status information• OGC Catalogue integration Transform SensorML into Catalogue Data ModelsWebMGS 2010Sensor Discovery ArchitectureOGC CatalogueAggregated Sensor MetadataLower Level Sensor RegistrySensor GetCapabilitiesMetadata DescribeSensor(Push)SensorSWE ServiceWebMGS 2010SensorML Discovery Profile• Need for a common metadata encoding for sensor metadata • SensorML is the relevant OGC standard for describing s ensorssensors• Due to the generic character of SensorML a profilfil ie s needed thth ta d fe ifines – a minimum set of metadata – a structure how to provide the minimum set of metadata• Formal defifinitiition usiSng chematronWebMGS 2010SensorML Discovery ProfileWebMGS 2010SensorML-ebRIM Mapping• SensorML is not supported as a data model for OGC Catalogues• Approach: Provide an according Catalogue extension• Mapping of SensorML to the ebRIM Catalogue InformatitiMon odel• Definition of object types, associations, attributes• OGC Discussion PaperWebMGS 2010Catalogue Link• Lower level registry– Harvesting of sensor metadata– Management of sensor status data• Metadata w ithinwithin the l owerlower level r egistryregistry too detailed for Catalogues  aggregation• Conversion of sensor metadata to ebRIMbRIM XSLT• Lower level registry pushes (aggregated and) converted metadata into the CatalogueWebMGS 2010