52°North SOS¶
Web Service¶
The 52°North Sensor Observation Service (SOS) supports the interoperable provision of live and archived sensor observation data. A sensor could be a water level meter in a stream, a weather station, or an air quality monitoring station.
Features¶
- Browser Client: The SOS is delivered with a browser based application. This provides means for administration and configuration of the service instance, as well as sending test requests for SOS operations; appropriate sample requests are included.
- Helgoland: The SOS contains the Helgoland application for the exploration, analysis and visualization of sensor web data in various fields of use, e.g. hydrology, meteorology, environmental monitoring, traffic management.
- Specifications: The 52°North SOS implements the current specification version 2.0.0 and the previous version 1.0.0 (here no transactional operations). Implemented operations for each standard version are listed below.
- INSPIRE Download Service Extension: Starting with Version 4.2.0, an extension is available that allows the SOS to be used as an INSPIRE download service. Background information is provided in a blog post and in the wiki .
- Air Quality Data e-Reporting Extension: Starting with version 4.3.0, an extension is available that provides for the Air Quality Data Flows E1a, E1b and E2a compliant data (the instance on OSGeo-Live is not configured accordingly). The installation and configuration is documented in the 52°North Wiki.
- RESTful API for Timeseries: Starting with Version 4.1.1., a bundle version is available, that directly provides the RESTful API, is available. Hence, timeseries can be requested in a RESTful way in JSON encoded requests. More details incl. documentation can be found in the SOS webapp.
- Read more: Details of the implemented functionalities can be found in the 52°North Wiki.
SOS Operations¶
Queries:
- GetCapabilities: for requesting a self-description of the service.
- DescribeSensor: for requesting information about the sensor.
- GetFeatureOfInterest / GetFeatureOfInterestTime (from 1.0): for requesting features (e.g. sensor/measurement locations).
- GetObservationById / GetObservation: for requesting observations.
- GetResult (from specification version 2.0): for requesting sensor data.
- GetResultTemplate (from specification version 2.0): for requesting a template of the result structure that will be returned by a GetResult request.
- GetDataAvailability (from SOS 2.0 Hydrology Profile - OGC Best Practice): for requesting the data availability for certain configurations.
Transactions:
- InsertSensor (from specification version 2.0): for inserting metadata of new sensors.
- InsertObservation (from specification version 2.0): for inserting new observations.
- UpdateSensorDescription (from specification version 2.0): for updating the description of a sensor.
- DeleteSensor (from specification version 2.0): for deleting a sensor/procedure and all related offerings and observations.
- DeleteObservation (extension for SOS specification 2.0): for deleting an observation.
- InsertResultTemplate (from specification version 2.0): for inserting a result template.
- InsertResult (from specification version 2.0): for inserting results.
- InsertFeatureOfInterest for feature insertion
- DeleteResultTemplate for the deletion of resultTemplates by identifier or offering/observedProperty pairs
Within these operations, the following filter operators are possible where applicable:
- Spatial filter: BBOX, using a bounding box.
- Temporal filter: During, with time period.
- Temporal filter: TEquals, with time instant.
Applicable Standards¶
Details¶
Website: http://52north.org/sos
Licence: GNU General Public License (GPL) version 2
Software Version: 4.4.0
Supported Platforms: Windows, Linux, Mac
Supported Java Versions: 7+, (bundle version: 8+)
Supported DBMS: PostgreSQL (9+) + PostGIS (2+), MariaDB/MySQL (5.6+), Oracle DB (9+), SQL Server 2012
API: Java, HTTP + JSON/XML/SOAP/KVP
Commercial Support: http://52north.org/
Community Support: http://sensorweb.forum.52north.org/
Community Website: http://52north.org/communities/sensorweb/
Other 52°North projects on OSGeoLive: WPS