Jirka - Integrating the ogc sensor web enablement framework into the ogc catalogue
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This document discusses integrating sensor web services into catalogues. It proposes a SensorML discovery profile to describe sensor metadata and a mapping of SensorML to the ebRIM catalogue data model. A sensor discovery architecture is presented using lower-level sensor registries that harvest and aggregate sensor metadata, convert it to the ebRIM format, and push it to catalogues. This work closes gaps in discovering and integrating sensor data and services into spatial data infrastructures.
Jirka - Integrating the ogc sensor web enablement framework into the ogc catalogue
- 1. Integrating the OGC Sensor Web I t ti th S W b Enablement Framework into the OGC Catalogue Simon Jirka, Daniel Nüst, Jan Schulte (Westfälische Wilhelms-Universität Münster) Frédéric Houbie (ERDAS)
- 2. Overview • Introduction • Sensor Discovery – Elements – Architecture • SensorML Discovery Profile • SensorML-ebRIM Mapping • Catalogue Link g • Outlook and Conclusion WebMGS 2010
- 3. Introduction • Sensor networks are used in a broad range of applications • OGC Sensor Web Enablement: Integration of sensors into SDIs • Discovery functionality currently missing in the th SWE framework f k • Full integration into SDI needs Catalogue support for SWE WebMGS 2010
- 4. Sensor Discovery • Sensor discovery comprises – Searching for sensors – Searching for sensor data – Searching for Sensor Web services • Most important search criteria – Ti Time – Space – Ob Observed property d t WebMGS 2010
- 5. Sensor Discovery - Elements • Describe the metadata of sensors SensorML Discovery Profile • (Automatically) collect metadata of sensors Harvesting metadata from SWE services • Support the dynamic structure of sensor networks t k Handling of sensor status information • OGC Catalogue integration Transform SensorML into Catalogue Data Models g WebMGS 2010
- 6. Sensor Discovery Architecture OGC Catalogue Aggregated Sensor Metadata Lower Level Sensor Registry Sensor GetCapabilities Metadata DescribeSensor (Push) Sensor SWE Service WebMGS 2010
- 7. SensorML Discovery Profile • Need for a common metadata encoding for sensor metadata • SensorML is the relevant OGC standard for describing sensors • Due to the generic character of SensorML a profile i needed th t d fi fil is d d that defines – a minimum set of metadata – a structure how to provide the minimum set of metadata • F Formal definition using S h l d fi iti i Schematron t WebMGS 2010
- 9. SensorML-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 Information Model C t l I f ti M d l • Definition of object types, associations, attributes • OGC Discussion Paper WebMGS 2010
- 10. Catalogue Link • Lower level registry – Harvesting of sensor metadata – Management of sensor status data • Metadata within the lower level registry too detailed for Catalogues aggregation Conversion of sensor metadata t ebRIM • C i f t d t to bRIM XSLT • Lower level registry pushes (aggregated and) converted metadata into the Catalogue WebMGS 2010
- 12. Outlook and Conclusion • Prototype available • Ongoing specification process – SensorML Discovery Profile – SensorML ebRIM Mapping SensorML-ebRIM • Work will be continued: EO2HEAVEN • Closing one of the last gaps for fully integrating SWE into SDIs WebMGS 2010
- 13. Thank you for your attention! More information: http://sensorweb.uni muenster.de http://sensorweb uni-muenster de http://52north.org/swe [email protected] jirka@52north org WebMGS 2010