Motion Imagery and location – coordinated with MISB Apply SWE to Mobile Internet
58 Copyright © 2010 Open Geospatial Consortium
Definitions for events, alerts and warnings need to be developed further. An event is an action that occurs at an instant or over an interval of time [ISO 19136]. With event as the
more general class, definitions for the terms alert and warning can be developed. These definitions should be done in coordination with the standards bodies, e.g., OASIS, and
the programs, e.g., CMAS, that are actively working on these definitions as well. Inherent to the OGC work will be the notion of location for events, alerts, and warnings.
Event Service Workflows were identified in OWS-7 for further development. The use cases tested in OWS-7 concentrated on delivering events that were detected or derived by
an Event Service to a clients. The clients were then responsible for reacting as they see fit. To facilitate automation of workflows – like the invocation of a change detection
service upon receipt of an area-of-interest entry event – the community should test the integration of event services in automated processing environments, leveraging available
functionality from workflow and chaining services. Tools could also be developed or tested to facilitate this kind of integration.
SWE Events Event Channels were identified in OWS-7 for further development. The work started in the OWS-6 SWE thread to define an OGC Event Architecture was
continued in the OWS-7 Event Architecture cross thread. The results show that the definition of event types as well as event channels is specific to certain application
domains. SWE 2.0 service specifications like the SWE Service Model or Sensor Planning Service already started with that work. However, further work in the area of eventing in
Sensor Web applications should consider defining events and channels that are of common use. For example, sensor status update events would be of interest. Event
channels where observations are posted that are made by certain types of sensors, that contain certain observed properties or that contain results that apply to certain geographic
regions could also be beneficial e.g. performance wise.